Benefits Of Fluorescent Lighting

benefits of fluorescent lighting

Frequently Asked Questions

1. QUESTION:
   Which is better for goldfish aquarium lighting: fluorescent or incandescent? I have 2 different kinds of lights and while I prefer the softer incandescent, I was wondering if there was any benefit from switching to the brighter fluorescent?
   
   • ANSWER:
     i would go with compcact flouresant or regualur flouresent lighting. 1. save money on elcectricity 2. brings out the clearity of the water and fish colors 3. if you have real plants it will be good for them 4. do not add much heat. you might also want to try to combine different colors depending on the effect you want. flourents are cheap and cost effective.
     
2. QUESTION:
   fluorescent light bulb!!!!? I would like to find the answers of the following questions: - Is there any states enforced a law or bill about the fluorescent light bulb? - How much dollars could we saved on the fluorescent light bulb (compare with the regular light bulb)? - What are the enviromental benefit of the fluorescent light bulb? Thank you very much!!! I need the primary resources....so please give me some sort of resources(like website) of where did you get it...thank you!!!
   
   • ANSWER:
     westignhouse.com They make neato mercury florescents that save 75% of energy over the same watt incandescent bulb. Enviroment.,I dunno, 85% of power plants use Coal, so if 75% of that in lighting was reduced, would be a good thing.
     
3. QUESTION:
   Internet resources for replacing a fluorescent light with an incandescent light? We have a very ugly fluorescent light in our kitchen and we would like to replace it with an incandescent light. However, when I've been searching online for how-to information, it's very hard to come by. Most information is just about the benefits of having a fluorescent light over incandescent, which brings me to my first portion of the question: even if I put in an incandescent light, couldn't I still put in the compact fluorescent bulbs and save on the energy consumption/cost? Secondly, I need to find a good resource that can explain the process for doing the switch. A video would be ideal, but anything with good step by step instructions and accompanying photos would work. Thanks!
   
   • ANSWER:
     I think all you have to do is change the fixture, which is relatively easy as home projects go. With older fixtures(which is what I suspect you have) there won't be any incandescent bulbs to fit that. Thats why the whole fixture has to go. Just make sure the electricity is off to the room you are working in. Look for information on changing the fixture and you will find what you are looking for. http://www.ehow.com/how_2296169_change-light-fixtures.html http://www.squidoo.com/lightfixture I included a couple of links but there are many. A good investment is a how to fix thing around the house book. Many of these are at the library for free or at book stores to buy.
     
4. QUESTION:
   What are the main differences between a GU24 and a regular twist fluorescent light bulb? Besides the steep price of a GU24 compares to the other bulbs out there currently. ~ per GU24 is just too much. So what are the benefits of using a GU24 overall, if any? Thanks, all.
   
   • ANSWER:
     A regular twist will fit most any standard socket. The GU24 is energy Star rated. The difference is the base of the bulb. It was two prongs on the in that push into its base and then slightly twist. The benefits? Well if you have a new energy star rated fixture( chandelier, Wall sconce, Bath Bar, some newer table and floor lamps), it will probably only take a GU24. The come in different color temps like most all other flourescents. This is the direction that the lighting industry is headed and you will start noticing more and more products with a GU24 based lamp requirement. Don't worry, I'm sure Wal-Mart and other cheap marts will have cheap ones for you soon.
     
5. QUESTION:
   Is yellow fluorescent light bulbs as good as white ones for reading/ working indoors? Is there any benefits to either of them? I'm talking about Ott-lite lamps.
   
   • ANSWER:
     As far as I can find, the ott lights are supposed to be brighter, and show color more naturally. See the link below.
     
6. QUESTION:
   which lighting is best, im confused? i have ordinary fluorescent double strip lighting in my 200 litre tank i was in lfs and seen all the lighting available and woooah its mind boggling so which do you use and why what are the benefits of different lighting uv lighting does it cost more to run etc............ so i guess im after pros and cons of uv lighting ant others i dont know the names of thanx for all answers x x x x its a freshwater community planted tank although my plants are doing great with flourescent
   
   • ANSWER:
     First, UV lighting is entirely useless for a fish tank. Useless. UV sterilizers are an entirely different matter, as they use UV light for sterilization, not illumination. In fact, UV light is entirely invisible and will do very little to light your tank. So, that leaves visible light, like that from compact fluorescents (CFL), T-5, metal halide, standard fluorescent tubes (what you have), and LEDs. Unless your tank has live plants or corals, or anything else photosynthetic, you don't really need to worry-- whatever looks best to you is fine with your fish. If you've got live plants, CFL or T-5 would be nice, though you can usually get away with standard tubes; metal halides are usually overkill unless your tank is upwards of a thousand liters. For corals, some can get by with minimal lighting from standard tubes, but most should be kept under CFL, T-5, or metal halide, depending on the more specific type. LEDs are rather new and not terribly great choices at this point, due to their cost and lack of refinement as of yet. EDIT: Again, plants do NOT use UV light to grow-- in fact, it is just as harmful to them as it is to us; remember, UV light causes sunburn, not to mention mutations that lead to skin cancer. The only expressed sentiment I agree with is that there's no sense playing with it if it seems to be working okay. EDIT 2: I've never heard of reefs with blacklights... maybe actinics, but not blacklights. Regardless, plants can use neither, and as already established, UV is harmful.
     
7. QUESTION:
   What size aquarium light should I get for my planted tank? I read that a good rule of thumb is watts for every gallon? I have a 29gallon aquarium, so 29-58 watts of light? I find that a huge difference. I also find it especially difficult to find a light with this wattage to be the correct size for my tank. It seems the higher the wattage, the longer the light. But if I go any smaller in size, the wattage is reduced. I also read that 2 fluorescent lights may be used, but my hood will only house one light. My plants require low-medium light, and low-medium growth rate, ph of 6.0-8.0, so they're generally easy plants to look after. I am experienced keeping Angels, but I can't seem to keep a plant alive! I am trying! There are HUGE benefits with plants and my Angels are happier. Every article I read about lighting for plants contradicts another article I read. One article says that the K rating means nothing, and another article's author swears by using 5000-10000K lights. WHAT do I get? Help! I mean 1-2 watts for every gallon!
   
   • ANSWER:
     I've grown plants for years and currently own a 29 gallon low tech planted tank with plants considered hard like cambomba growing well. Pretty much lighting wise, the K spectrum does not matter. I've grown plants under cool white bulbs (though these make the fish look bleached out so I don't reccommend it) to more specialize "planted tank bulbs". The plants don't care. My substrate is plain old gravel and I use the Estimative Index for fertilization. I've done everything from pressurized CO2 to natural lighting only but currently prefer the the non CO2 low light method since it involves a lot less pruning. My current tank (29 gallon) has 3 24" fluorescent bulbs and is densely planted (over 75% of the substrate is planted). It has an assortment of Valisneria giganthea Ludwigia repens Cambomba carolina Red Cambomba (forgot the scientific name) Elodea Anternatheria Crypt Wentii I do a 50% water change every 2 weeks followed by a dose of 1/4 teaspoon of Potassium Phosphate (Yes I am adding phosphates to the tank) 1/4 teaspoon of Potassium Nitrate 1 Teaspoon of Potassium Sulfate 1 tablespoon of Magnesium Sulfate (My water has almost no magnesium so this might not be necessary for you) I also dose 5 mL of Seachem Flourish the following day. My tank has virtually no algae and the plants are doing excellent. Go to www.barrreport.com for some more information.
     
8. QUESTION:
   What benifit would the global scientific community gain from "lying" about climate change? ? The diminishing community of climate change deniers still cling to the idea that science is biased or some how politically motivated. I would like to hear from them what benefit they think is motivating the propagation of untruths? A vast, left-wing conspiracy? Who benefits from that? GE who makes compact Fluorescent light bulbs? Toyota, who makes more fuel efficient vehicles? Just curious to the thought process.
   
   • ANSWER:
     Face it - Money is the motivation. Just look at Dr. Jim Hansen. He sold his political endorsement to John Kerry in 2004 for a cool 0,000.00! Do you think his reward would be the same if he wrote a paper saying the Sun causes climate change? Plus you are right. Corporate welfare thrives from "global warming". Politicians receive millions from corporations to write bills that demand the public buy new and expensive products. Money is the motivation behind "global warming". Those who say that it's natural, not caused by man have pure motives, as they don't receive any money by their position.
     
9. QUESTION:
   Fluorescent Light Correction Filter? I an looking art a set of 3 filters on Ebay, and I am aware of the benefits of the UV and Polarizer filters, but it also comes with the filter mentioned above. I can't see me using this one as I do not expect to shoot indoors too often( but who knows the future), so I am wondering if I can use it in other situations? Thanks folks, you are really helpful!
   
   • ANSWER:
     I suggest not buying the set of 3 filters you are looking at on eBay. Notice how cheap they are? Plus, including a Fluorescent filter is a waste since digital cameras have something called White Balance and you use it under fluorescent light. Lets look at some prices for real quality filters such as Heliopan, B+W, Hoya and Tiffen. Since 55mm is a common filter size we'll price a Circular Polarizer at B&H. Heliopan: .99 to 5.99 Hoya: .85 to 74.85 B+W: .00 to .50 Tiffen: .95 to 4.95 The quality of the materials used in the filter and additional coatings to reduce flare are why there is such a price difference. However, even the lowest-priced name brand filters will be far superior to the ones in the 3 pack you saw on eBay. I still use a Tiffen polarizer I bought in 1972. Always remember: "Good filters are not cheap and cheap filters are not good." B&H: http://www.bhphotovideo.com
     
10. QUESTION:
    Read this? Public school better than homeschool ? 10 reasons why public school is better than homeschool. -- 1. Most parents were educated in the under funded-public school system, and so are not smart enough to homeschool their own children. 2. Children who receive one-on-one homeschooling will learn more than others, giving them an unfair advantage in the marketplace. This is undemocratic. 3. How can children learn to defend themselves unless they have to fight off bullies on a daily basis? 4. Ridicule from other children is important to the socialization process. 5. Children in public schools can get more practice “Just Saying No” to drugs, cigarettes and alcohol. 6. Fluorescent lighting may have significant health benefits. 7. Publicly asking permission to go to the bathroom teaches young people their place in society. 8. The fashion industry depends upon the peer pressure that only public schools can generate. 9. Public schools foster cultural literacy, passing on important traditions like the singing of “Jingle Bells, Batman smells, Robin laid an egg…” 10. Homeschooled children may not learn important office career skills, like how to sit still for six hours straight. Your thoughts?
    
    • ANSWER:
      For those of you who thought this was a post bashing home school students, you need to go look up the word "satire," seriously... I was home schooled from the seventh grade until I went to college. I would say for me it was better. I felt the pressure of other kids and their judgment in public school and the teachers did nothing to stop it. As a result of my home schooling I make friends with everyone no matter what "click" they are part of, and treat everyone with respect until they basically spit on me. I have my own desire to study hard in college because I can now appreciate the benefit of having a teacher to question when I need help. I realize that some kids need public school so they can have friends and all that, but it was better for me personally that I home schooled, and I never needed school to make friends. I made more friends more easily after I left the public school system, and I think home school made it easier for me to look inside a person for friendship unlike the superficial morons, fresh out of high school, that I get setting behind me in at least one class every semester, disrupting the class by whispering insults about the adults sitting in front of them and making fun of those who actually had to work to get into college and are there for an education. P.S. I'm going to college to be and English teacher now.
      
11. QUESTION:
    Are you GREEN - or are you going to boycott those screwy little bulbs? David Henderson - Let There Be (Incandescent) Light By David Henderson Friday, October 2, 2009 What would Thomas Edison say? Last month, stores in Europe stopped acquiring new stocks of Edison's brilliant invention. In truth, the traditional incandescent light bulb is terribly inefficient: Only about 10 percent of its energy output is in the form of visible light; the rest is emitted as heat. Switching everyone to alternatives such as compact fluorescent lights (CFLs) will result in fairly significant reductions in energy consumption, which will help Europe meet its targets for reductions in carbon dioxide emissions. A similar ban, written into energy legislation a few years ago, is to take effect in the United States in 2012. Though it has distinct improvements over the European legislation, this ban is still a bad idea. While the European Union outlawed a particular technology, Congress set minimum efficiency requirements for lighting. Old-fashioned (regular) incandescent bulbs do not meet this standard, but by 2012 there may very well be some improved incandescents on the market that will. That this change is manifest in our daily lives makes it a meaningful and encouraging option, but it should be just that: a voluntary option. Light bulbs are a poor choice for regulation. Is there an overriding reason to regulate how Americans light their homes? It's true that compact fluorescent lights are widely appreciated among those with heightened "green" sensibilities. They are a welcome option for those who are trying to reduce their environmental impact. Replacing bulbs may be a small measure, but it is also something that can be done by people who may feel powerless or frustrated before the larger problems besetting our planet. But many people also have a decided dislike of CFLs and will greatly resent the ban. While they may last longer than incandescent bulbs, the upfront cost is high; the light produced is not as bright as that of incandescent bulbs; they are slow to achieve full brightness; the bulbs don't fit in many old lamps; they can't be dimmed; and their lifespan is greatly shortened by using them for less than 15 minutes at a time. The manufacturers of compact fluorescent lights have made improvements on some of these issues, but their reputation is not yet vindicated. The environmental benefits of using only compact fluorescent bulbs are indirect -- and less than what could be realized by changing standards governing, for example, coal use. Consider: The benefit of "reducing inefficiency" depends on where the energy is coming from. Improving efficiency without eliminating a harmful source may just free energy that is then used elsewhere. If there is no net reduction in energy use, where is the benefit? Direct regulation of harmful activities, such as putting firm limits on carbon emissions, is more likely to achieve the desired environmental result. (And this would only indirectly influence my bedroom decor.) A great deal of the wasted energy in lighting comes from excessive nighttime lighting in public spaces, which is an excellent issue for government to address. Banning traditional light bulbs as used in private homes seems an effort in the name of environmental protection that has very little payoff. There is more political will behind environmental reform than is generally appreciated, but it is not unlimited. We should invest our political capital where it will be most effective, not burn it in compact fluorescents. Congress should regulate matters that require the force of law, such as banning mountaintop removal in coal mining and new coal-burning power plants. Leave people to change their own light bulbs. The writer teaches environmental ethics in the philosophy and religion department at Western Carolina University. http://www.washingtonpost.com/wp-dyn/content/article/2009/10/01/AR2009100104254.html?wpisrc=newsletter&wpisrc=newsletter
    
    • ANSWER:
      those screwy little bulbs sometimes only last a week in this house. we have yet to get 6 months out of one, and they are very temperamental. if struck by sudden cold from an opened door, they will crack into very tiny pieces. in our rural area they are very costly 1 @ .99 where as a regular bulb is 3 for a .00. the light is nice and white, very slow to illuminate, but the cost does not yet offset. even if left on continuously we have yet to see the green savings. the Mercury is a whole other concern. especially with autism. so until the technology is improved we are against them. we can punch wholes in our atmosphere but we can't yet light the dark effectively.
      
12. QUESTION:
    Help! Exam review question, I can't seem to figure this one out...? A local utility company, PEPCO, charges for electricity by the kilowatt hour (kWh). They currently charge approximately 10 cents per kWh. a. In your bathroom are 5 light bulbs that typically run for 2 hours a day. You recently swapped out 60 watt incandescent bulbs for 5 watt fluorescent blubs. How much money are you now saving per month by making this change? b. LED light bulbs are now coming onto the market. LEDs have a number of benefits compared to fluorescent bulbs: they use less energy, they don’t contain mercury, they don’t flicker or buzz, they turn on instantly at full brightness, they produce less heat, and they last longer. However, LED light bulbs produce more directional light (so they are less effective as ambient light sources), a slightly bluish color of light, and they are also much more expensive than fluorescent bulbs. You can buy a 10 watt LED bulb to replace a typical 75 watt incandescent bulb for about . Such a bulb could run continuously for ~40,000 hrs before “burning out.” A 20 watt fluorescent bulb with similar brightness might cost .50 and could run continuously for ~10,000 hrs. Compare the total cost of running each light bulb for 10 hours a day for a year – include both the yearly cost of the bulb and the cost of the energy consumed in that year. Note that you don’t have to buy a new bulb each year, so the yearly cost is less than the purchase cost. c. Based on ‘part b’ would you recommend a friend buy LED light bulbs or fluorescent light bulbs? There is no “right” or “wrong” answer, but you must defend your recommendation.
    
    • ANSWER:
      Hi LED Light technology is going to revolutionize lighting technology.LED Light are definitely worth it and a lot brighter.i just suggest you go for the Led Lights
      
13. QUESTION:
    Economics. Which is the correct answer? A study found that the incidence of skin cancer increases along with the amount of time people work under fluorescent light, leading some people to conclude that fluorescent lighting is a cause of skin cancer. But further analysis found that people who work in offices, where fluorescent light is common, suffer more sunburn on their vacations than other workers. The sunburns, not the fluorescent light, were the cause of the higher incidence of skin cancer. The original conclusion illustrates: a) the fallacy of composition. b) confusion of correlation and causation. c) identifying marginal costs and marginal benefits. d) biases and loaded terminology.
    
    • ANSWER:
      B) Confusion of Correlation and Causation ~ ~ ~
      
14. QUESTION:
    What makes LEDs safer?（OKLEDLISHTS COM）? OKLEDLIGHTS COM Said that Since they are based on solid state electronics the risk of snapping a filament or cracking a glass due to vibrations are miniscule. A large portion of the electricity is converted to light – this means lower heat production, cool operation, low risk of accidental fires or scalding. A less appreciated benefit stemming from cutting edge LED based lighting devices is that they do not contain mercury. Mercury was a major drawback for energy efficient lighting until LEDs came into the picture. You either had 5 milligrams of mercury from coal burning power plants or 5 milligrams of mercury from a fluorescent light – the choice between the fire and the frying pan was hardly appealing. Safe disposal facilities for mercury sequestering and recycling are the only solution to this toxic element from fluorescent lights. But reverse logistics and operation of safe recycling facilities add to the carbon footprint of fluorescent lights. Added to this is the fact that not all these lights will be safely disposed and a neuro-toxicant will continue to accumulate unabated in land and water. Why not substitute that fluorescent light with an LED tube? With LEDs, disposal date itself is a decade from now! And there isn’t any mercury to contend with.
    
    • ANSWER:
      ok im jus gonna answer the question at the top lol..... leds last lik 10 times longer then a filament bulb
      
15. QUESTION:
    When is the right time to go on temp disabilty? How does one approach their employer with...? ...that? My dry eye symptoms have worsened lately to the point where I can't work in the office with the fluorescent lighting and AC blowing on my eyes. Also the extensive computer work is causing excessive strain. I am seeing eye dr's and tried all the eye drops & gels and now am being advised to get my tear ducts plugged up. I have Graves disease which is the main cause. I also have blepharitis. I can't even drive in the sunlight at this point without tearing burning and blurring to the point of not being able to see the road. Evening driving is ok. My question is whether I should go on temp disability now or not. I will get full pay benefits up to 26 weeks if need be. Will this hurt my job security and my career? I feel this would be best for me to get away from the computer (10-15 hours a day) and give my eyes a break while a seek out and resolve what I need for my eyes to get healed.
    
    • ANSWER:
      Going on state disability will not hurt your job security. By law your employer has to take you back. However they don't have to give you your same location back to you. Your health is more important then your job my friend. I put off going on disability for 3 years and now I have permanent damage to my legs. My advice to you , is take the time you need to be off and take care of your health problems before it gets to serious and you can't work anymore at all. You can always get another job my friend ' it might not be the same job but you will get back on your feet if you want to bad enough.
      
16. QUESTION:
    After solving a problem, new problems are often created. A classic example was the use of DDT to control malar? After solving a problem, new problems are often created. A classic example was the use of DDT to control malaria-carrying mosquitoes. Malaria cases declined, but the consequences on the environment, to osprey eggs in particular, lasted for decades. In public health, we constantly weigh the risks and benefits of our decisions. The following scenarios are contemporary decisions with the potential to impact the health of human populations and/or environment. Choose one of the situations and formulate a risk/benefit analysis for the decision. You may want to consult sources beyond your textbook. Scenario1: With the escalating costs of energy, the demand for petroleum, and fears concerning greenhouse gases, efforts have been undertaken to provide more energy efficient devices. The most basic of these is the incandescent light bulb. Compact fluorescent lights (CFLs) are now readily available. Australia became the first nation to ban incandescent bulbs beginning in 2010. The US will gradually phase out of the bulbs in favor of CFLs between 2012 and 2014. Discuss the controversy surrounding this transition in formulating your risk/benefit analysis. Scenario 2: Pest management can be challenging. Society has long sought alternatives to chemical pesticides with potential human/environmental toxicity. A recent trend, Integrated Pest Management (IPM), seeks the least toxic means to combat a given pest including pheromones, predacious species and other methods. Weigh the risks associated with each methodology to formulate your risk/benefit analysis and determine which of these are the most viable.
    
    • ANSWER:
      The Law of Unintended Consequences. The problem is you can't do a cost benefit analysis with concequences that you didn't know were coming. It simply wasn't known that DDT would have that kind of impact on the environment. I'll give you another great example. CFCs were a huge benefit to mankind in refrigeration. They provided vastly more efficient ways to keep food and medicin viable with modern refrigeration. When investigation of the ozone hole started scientists were SHOCKED to find that molecules that heavy were able to make it that high into the atmosphere and interact with the ozone layer.
      
17. QUESTION:
    Can someone on disability open a business? I have a chronic condition that causes a myriad of problems. I try to work, but I cant really sit all day, or in front of a computer because of the migraines (which is amplified in an office full of noise and fluorescent lights) not to mention the constant stress and fact that my job is a soul sucking pit of despair (which doesnt help the vitamin deficiency induced depression) I like working customer service, but around here the jobs simply do not pay enough. A manager here gets paid less than 30k to manage an entire hotel (gm gets more I think) but I live in a place with only 20 hotels total, so once someone gets a job they don't leave it. So I was thinking of discussing disability benefits with my doctor since I end up missing a lot of work (like a 4 days every month at the minimum, other times I can barely manage 2 shifts per week) and it really hurts my income since I dont get paid if I am not at work (no sick leave or pro) But I wondered if I did go on disability if I could eventually open my own business. I have been attending classes and almost have my degree and would like to open a small b&b with the help of some friends who would staff it. I am just worried they will be like "if you cant work then you cant work" but really its that I cant work here. In a corporate disgusting stressful fluorescent lamp filled suck hole.
    
    • ANSWER:
      Even when you are on disability you can go to school, and get yourself back in the workforce. Once you are working you lose the disability. That simple.
      
18. QUESTION:
    Should I replace R20 incandescent recessed lights on dimmers with LED or compact fluorescent? I have recessed lighting in my kitchen and also in my basement bar/rec room. All are R20 bulbs and all are on dimmers. I want to keep the dimmers but am considering making a switch to either LED or compact fluorescent. I want to keep a "warm" light color in both. I feel like I'm changing a bulb once a week and am looking for something with longer life. I don't care that much about the energy efficiency benefits (although it would be nice) but I'm more interested in getting more bang for my buck in terms of the bulb itself (while still keeping that warm light). I know I need to look for "dimmable" CFL's and LED's. Which one(s) should I get and why?
    
    • ANSWER:
      You'll have better luck finding dimmable LED lamps than you will CF. LEDs aren't more energy efficient than CFs, not yet. The potential is there but nobody's making an LED that delivers more light per watt than a CF. But they do run as cool as CFs and unlike the CFs aren't as difficult to make or find as a dimmable variety. You can get dimmable R20 LED lamps right now. Unscrew the ones you have, install the LEDs, job's done. LEDs have a huge advantage over CFs in that they run longer. A good CF will go up to 12,000hrs if you're lucky; a good LED is just settling in at the 12,000hr mark. If you don't run them at full brightness all the time, LEDs can go way longer than you ever thought possible in a residential light bulb. I have in front of me right now a Philips "AmbientLED" R20 bulb, 7w cool white (you can choose warm white); it's rated at 40,000hrs. This one isn't for dimmers but dimmable ones are out there. 40,000hrs is over four years. Turn it on now, it dies (maybe) sometime in 2016. Often that hour rating is to an arbitrary reduced output cutoff - when it's only delivering 50% of its original brightness, they call it "dead." Here's a comparable dimmable model at Amazon: http://www.amazon.com/PHILIPS-EnduraLED-Dimmable-Light-Bulb/dp/B003NA118O Good luck with it.
      
19. QUESTION:
    Some questions related to environmental health...? 1, Why Should Global Environmental Issues such as Population Growth, Thinning of the Ozone Layer, and Biodiversity of Species Matter to People? 2. List three things that the natural environment provides that benefit health status. 3. A result of a negative visual environment might be: a. better social health c. increased stress b. fewer distractions d. improved concentration 4. According to the World Bank Group, population is increasing by about how many people per day? a. 50,000 c. 200,000 b. 100,00 d. 20,00 5. As of the end of the year 2003, there were about how many people living on Earth? a. 3.1 billion c. 986 million b. 245 million d. 6.3 billion 6. If you are not going to use a fluorescent light bulb for _____, it pays to turn it off a. 30sec c. 30min b. 5min d. 1hr 7. The increase of atmospheric carbon dioxide that contributes to global warming is due primarily to a. an increase in tree planting in many areas of the world b. an increase in the Sun's radiation c. geothermal energy sources d. burning of fossil fuels for energy 8. One condition associated with poverty is a. homelessness c. education b. childlessness d. affordable housing THANKS
    
    • ANSWER:
      http://answers.yahoo.com/question/index?qid=20100612140038AAUfua4
      
20. QUESTION:
    Have you ever noticed that 1st-world societies are established by, and in the best interest of, intellectuals? This is how the world is currently run: People who slave away miserably in classrooms and offices, sedentary and physically unhealthy...are busying themselves in those classrooms & offices to make the world function to benefit themselves. They use their intellectual, sitting-around, directive-giving powers to make the healthy, active people do all of their grunt work for them. If you don't graduate from a university and slave away in an office building, you can hardly afford to feed and shelter your family. What if the tables were turned? Imagine if all of the healthy, able-bodied people were running the world, and the sedentary people who like to sit still under fluorescent lights all day were at the mercy of the healthy people. Imagine if society was organized and functioned in the best interest of healthy, active, able-bodied people. Do you think people would be more motivated to be healthy so that they could keep up with the status quo? As things are now...people are sacrificing their health and well-being and true happiness in order to do all of the tedious things that are expected of them: expensive and useless college educations, agonizing careers. True, the most financially well-off people are self-made, and they "get ahead" in life. But why do they get to define what it means to "get ahead?" I think that healthy people should rule the world!!!
    
    • ANSWER:
      most of the billionaire and millionaire are self made...work hard and get ahead in life
      
21. QUESTION:
    Bearded dragon advice regarding lighting and supplements.? Hello, I currently use a 5.0 reptiglo for my baby beardie.Is that good? Or not? If not please specify which one is. How about Exo Terra 160 Watt Solar Glo Bulb? It's description is below: * Optimal levels of UVB, UVA, visual light and heat in one bulb * Self-ballasted mercury vapor bulb * Provides the benefits of natural sunlight * Helps prevent metabolic bone disease * Increased UVB penetration distance Or another bulb which is Fluker Sun Spot 160 Watt Mercury Vapor Bulb. OR Zoo Med Repti Sun 10.0 Fluorescent Bulb? What's better, Bulbs or flourecent tubes? Which one would you pick and why? As for the supplements... I heard of a supplement that has all in one, and is the best there is as it is especially made for beardies. It is T Rex Bearded Dragon Calcium Plus. What are your thoughts? Thank you.
    
    • ANSWER:
      Exo sounds like a good product. I have always used the fluorescent lights and think they are good. As far as the mercury vapor...... IDK. Your best bet would be to contact a herpetological society that is near you and ask the experts there who have tried all of the bulbs you are considering. I know that with the fluorescent bulb, it can't be any further than 18" from the reptile and over time, they loose some of the UV efficiency. Like I said, I've used them for YEARS and think they are fine.
      
22. QUESTION:
    What is the cost benefit of using LED's ? I am looking for some tables that compare LED Lm/W out put to other light sources. Anyone know where or have any links to tables that break down cost benefits of halogen or fluorescent to LED. For instance the cost of installing LED's are more expensive up front but compared to equal Lm/W output how long would it take to get back the investment in overall utility and maintenance savings.
    
    • ANSWER:
      There some really good charts on Wikipedia as well as some engineering journals. I have seen comparison between LED's and fluorescent as well incandescent and halogen as well. Seems that with our current technology that LED's are about as efficient as fluorescent and they tend to last longer. The down side is they cost a lot more.
      
23. QUESTION:
    Please help about the history? 1. Thomas Edison's contribution to the search for cheap and efficient indoor lighting was the a. incandescent bulb b. gaseous-discharge bulb c. fluorescent lamp d. arc light. 2.which of the following was true of wage earners during the late nineteenth century? a. they usually worked in occupations that were relatively safe. b. they generally benefited from the shortage of workers that kept wages high. c, they heard employers justify low wages under the guise of individual freedom. d. the only thing that saved them from destitution was the "iron law of wages." 3.for which of the following reasons was the early twentieth century a transitional point with regard to women's fashions? a. designers began to use less fabric and place more emphasis on comfort. b. the abandonment of the corset caused women to become less concerned with waist size. c. american women began to show their preference for more restrictive Victorian styles. d. high- boned collars became standard on almost all dresses 4.Advocates of Social Darwinism believed that a. wealth carried no responsibilities except to get more of it b. the government should use its power to tax to bring about a more equitable distribution of wealth. c. wealth is mark of well-deserved power and responsibility. d. the government should protect the weak in society by regulating industry. 5.George Westinghouse made it feasible to transmit electricity over long distances by using a. complex circuits and semiconductors. b. direct current and rectifiers. c. alternating current and transformers. d. conductors and insulators. 6.which of the following statements is most consistent with the beliefs of writers who criticized the trusts? a. trusts are unnatural because they were created by greed. b. trusts keep prices artificially low. c, trusts create disorder in the marketplace by increasing competition. d.. trusts disrupt the natural economic order by encouraging government regulation. 7. in practice the principle known as the "iron law of wages" meant that a. employers recognized the right of workers to bargain collectively. b.employers increased workers' wages as the cost of living increased. c. wages automatically increased a s profits increased. d. employers did not have to raise wages as long as there were people who would accept low pay. 8. the assumption of leadership position within the women's trade union league by agnes nestar, rose schneiderman, and mary anderson was an indication that control of the union had shifted to a. anarchists who advocated a violent war agianst the capitalist system. b. nonmilitant middle-class women. c. forceful working-class women. d. recently arrived immigrants 9.the development of the southern textile industry was aided by which of the following? a cheap immigrant labor b. the use of electric motors to power automatic looms c. an abundance of water to power the drive shafts for machines d. the use of profit sharing to encourage worker productivity 10. the main problem with pools was that a .the interstate commerce act made them illegal precisely when they were most important. b .they did not increase profits c. too often members used each other for violation of the agreement creating the pool d. there was no legal way to enforce the " gentlemen's agreement" that created the pool. 11. tariffs in the late nineteenth century a. almost destroyed the american manufacturing system b. were bitterly criticized by social darwinists c. kept prices for many products at artificially high levels d. did little to aid american businessmen.
    
    • ANSWER:
      Try homework help if you are stuck or ask an actual question. We won't do your homework for you.
      
24. QUESTION:
    Hey,native english speakers, I need some advise from yours.? one of my friend's company is going to make an advertisement in english,So i have translated all chinese into english for her . Could you do me a favor,As you know,i am not a native english speaker,so please kindly let me know if i made some mistakes on grammar or somewhere.or you can write to me in a different way but with the same idea. Any good suggestions are greatly appreaciated. Thanks a lot. Pls see the following as i translated for her. 20 years ago, an enterprise with condensed dream and hope, began her bright journey in Shunde,Foshan, which is full of energy; Over the past 20 years, she ceaselessly strived, pursued excellence and was creating agreeable and comfortable life for numerous people through high-quality lighting products; 20 years later, she has become an large enterprise, specialized in developping, producing and managing of architecture electric appliance fittings and lighting products, with the production base of a total area of more than 40, 000 m2 and a professional team of over 2,000 people and an annual growth rate of more than 45% for nearly 3 years; The former unknown XXX company, has become famous in lighting industry of China now. During the process of development of over 20 years,XXX Company had adhered to continual revolution and management innovation and made efforts to push forward construction of enterprise system and carried out the responsibility mechanism of enterprise management and incentive mechanism of benefit; Moreover, the enterprise had always taken the talents construction as the core of increasing enterprise’s competitive strength and built up a professional team of high quality gradually through long-term and effective talents cultivation and introduction. Following the idea of “pursuit of excellent quality and creation of permanent brand”, XXX company spares no effort to improve production capacity: the Company had paid a lot of money to build the large production base and logistics center integrating design with research&development, manufacturing, assembly and marketing, introduced the industrial leading powder coating machines, automatic wire stretching machine,, automatic bridging machine, automatic powder coating production line, full automatic punch, plastic injection machine, light source optical spectrum analyser, photospheric analyzer and other advanced production and testing equipments, which promoted innovation in production technology continuously and took a leading position in the field of science and technology of lighting products research and development for the past many years XXX company has been insisted on the principle of customer-based and market-oriented as for product development and launched new products continually, and up to now, XXX has 9 types of products of switch, socket, energy-saving lamp, ceiling lamp, electronic ballast, electronic transformer, magnetic ballast, fluorescent fixture,office and commercial lights, with more than 2,000 varieties of products. While increasing the varieties of products, XXX strictly controls the product quality, which is the basis for enterprises to establish credibility, and it carries out strict quality control in each links from purchase of raw materials to product design, development as well as production. The Company has the import and export right and has obtained ISO9001：2000 quality management system certificate, China Compulsory Certification(CCC), UL, CUL, CE ,ROHS,United Nations Supplier and energy efficiency certificate. The Company was awarded the laurel of contract abiding & trustworthy enterprise, China credit brand for superior quality and reliable service, civilized enterprise,China quality credit enterprise and other honorable titles; Moreover, it acquired the product appearance design and letter of patent of utility-type. Products of XXX are popular at home and abroad with their excellent performance and good decoration effect and have become the first choice of various large building and engineering lighting system. During long-term practice, XXX company had always recognized and cultivated the market actively with advanced concepts and motions, carried out “planed market extension”, “service marketing” as well as “development strategy of regional market” and other market expansion idea and adhered to the strategy of brand construction and banged the market with such 3 advantageous brands as “XXX”, “XXX” and “XXX”; At present, the marketing network has covered 32 domestic Provinces and over 1,000 Counties and Cities and the enterprise is developing international market actively and the products were sold far to Europe, Canada, the United States, South America, Asia, Australia and the Middle East etc., and the enterprise will become one of the most competitive enterprises in switch and lighting products manufacturing. XXX Company bases itself upon today and cherishes the future and will move forward with everlasting first-class management, first gra
    
    • ANSWER:
      too long ques
      
25. QUESTION:
    !!!!!!!!!!!Planted 29 Gallon!!!!!!!!!!!!!? I'm starting a 29 gallon fish tank. I would like to use as many live plants as possible, for their look and for the benefit of the fish. I already have flourite substrate. After the plants I will be adding a school of zebra danios, maybe eventually dwarf gouramis or swordtails. My concern is the lighting. I have a hood for the aquarium that will take a 24" fluorescent bulb. Right now there is a 17 watt, 8000 k fluorescent bulb in it. Is this enough light for plants? Do I need more light? Where can i find higher watt fluorescent bulbs that will fit, if they exist? And another concern of mine is the expense of said bulbs. Also, how do i figure out how many lumens a bulb is giving off, cuz i know that a 17 watt fluorescent gives off a different amount than say a 17 watt incandescent.
    
    • ANSWER:
      The only way you'll survive this is to use low light plants only.... Java's----Crypts-----Amazon swords--Anubis--Val's Buy an all purpose liquid fert like seachem flourish and use it very very sparingly. Add no CO2 and do 20% water changes weekly. Plants can photosynthesize between 5000k-10000k light. 6700k is perfect. You should be Okay. Hagen life glo2's and Zoo med ultrasuns are good cheap plant bulbs. The only way to increase the wattage is to replace the canopy. Keeping plants is big money if you don;t go low light, there great plants they just grow slower that's all. get a light timer aswell from the hardware store and set it for 8-9 hours a day. there 3 bucks, just make sure its 3 pronged if your canopy is. Don't worry about lumens unless your willing to spend about 150 bucks for a T5 or a T5HO ballast set up. just go low light, that's a deep tank, hard for light to penetrate so get plants that don;t need much to thrive. DOn't and you will hate the results. good luck and enjoy
      
26. QUESTION:
    Poorly Cared for Uromastyx Maliensis? I've been searching the internet like mad for accurate information about uromastyx, and have had very little luck. No one seems to agree with anyone else - and I really need some correct and useful info. I'm currently taking care of my friend's boyfriend's Uromastyx maliensis, Spike, and have so far learned that he has been cared for incorrectly for most of his life. He's about 7 years old. This is the way he is kept: In a 40 gallon fish tank with two Western Fence Lizards (wild caught around here in northern California). He has a heat lamp that isn't nearly hot enough, no thermometer, and his light source is the heat lamp and a fluorescent bulb in a desk lamp. He is regularly fed superwoms and crickets, and a salad mix heavy on the spinach. He's not being supplemented in calcium, nor is he receiving any UVB. There were two hotrocks in the tank, which I have since turned off (now they're just odd decorations). His owner takes him out on walks. That said, we do live in California so temperature is not the issue, but I seriously doubt there are any benefits to doing so. I'm looking for any inexpensive ways that I can improve his quality of life, as his owner is broke and I have my own expenses. I feel terrible that he's been treated this way and wouldn't feel right continuing to do so. I have read all those care sheets - I was just looking for someone with personal, DIY, experience. Everyone says no hot rocks, btw, as the uromastyx don't have heat sensors on their underside and can be badly burned.
    
    • ANSWER:
      hey :) I have one uromastyx maliensis, and I bought him when he wasn't in a great state, but he's all good now. He needs an 100w infrared bulb, I live in england so heat is probably more of a necessity for me, but they're only about £6 from amazon (not sure what that is in dollars :S ) This is what's in my mali uro's tank-thing... Sand - play sand is fine, they like lots of it. Two caves - anything round an hollow that they won't eat? Rock is good, just make sure that your lizard won't dig under them and get squashed. A branch - Just a dry branch for them to climb, scratch etc A flurescant light tube - has UVB,although sounds as if your bulb is giving him this. Thats about it food..... I wouldnt feed them superworms or crickets, mali uromastyxs arent meat eaters (If they qualify as meat) growing uros sometimes need a meal worm once a month, but otherwise they could do some serious damage to your lizard. I would stick to peas, alfalfa, and lots and lots of dandelions, also millet seed. All of this needs spraying with a little water, except the millet seed. I wouldnt feed them spinach if I were you. No hot rocks is good, the do serious damage! Hope I helped :)
      
27. QUESTION:
    Does this light bulb help my plants? I bought this light bulb: http://www.amazon.com/Repti-Glo-Compact-Fluorescent-Tropical-Terrarium/dp/B00101JI2Y/ref=pd_sim_petsupplies_1 ..for my reptiles, but I no longer need it for them, so now I use it at night when the sun goes down I give my indoor plants an extra few hours of light under this bulb.. is it too weak to give them any benefit? Am I wasting my time giving them supplemental light with this? It provides 200 UVB, it's luminous flux is 850 (whatever that means)
    
    • ANSWER:
      It can't hurt your plants, certainly. If you have only a few plants it will provide them more benefit than if you have several plants. I say this because it is a small bulb. Since it is small if you have many plants not all will get the light.
      
28. QUESTION:
    Advice for first chapter of story? Here it is..what do people think? (I know it's a lot...sorry) [insert sheepish grin] Today is rather… different. You see, there are several unique perks to being a national hero. Appearing as an idiot solely for the morbid amusement of our nation’s toddlers, woefully, does not fall within those additional benefits. It started in a reasonable fashion- with an official type of letter. You know the sort; the engravings about the sides, giving the thick, creamy sheet a somewhat lacquered appearance. Miniscule scoring marks could be detected in the paper’s pattern. It was plastered with gaudy gold ink, not a single word without a fantastic flourish embellishing it. One is not immediately suspicious of a wedding invitation- in fact, I enjoy such occasions greatly. I ripped the rich beige envelope, smiling expectantly. Lo and behold, no wedding invitation is encased within. Instead, the demonic, soulless eyes of a blindingly scarlet fiend leer mockingly up at me, proclaiming crassly from a speech bubble floating unassumingly beside its shaggy mass of a skull that “I’m Invited!” My fingers cramped; I clutched the abomination and twisted until the fine paper crumpled beneath my whitened fingers. Scornfully, I dropped the invitation, watching the mangled Elmo drift to the floor. Long have I entertained a secret horror for Sesame Street- there lurk the monsters of my childhood- the gleaming sockets of the looming, neon yellow form of Big Bird; the wicked cackle of a filth encrusted green thing skulking in a garbage can; the deceivingly friendly, amphibian face of a grotesquely grinning frog… Of course, I also felt a certain obligation. The press would leap at me like rabid dogs if they discovered my rejection of America’s youth. I would be made out as a cruel, cold, child-hater. I shivered involuntarily as I bent to pick up the paper again. *** The set was a nightmare; an absolute nightmare. Gallingly cheerful, but all the same, shrouded in a perpetual cloud of malevolence. Or so I felt. I was on edge, senses on overhaul. This would surely be the death of me; I was not known to be paranoid, nor was I fond of inflicting dread unto myself. It’s for the media, my fevered mind whimpered beguilingly. Tempting me to enjoy the pleasant wit of the director or the gentle sun caressing my skin through an open skylight on the location. No, my primal instincts fairly screamed. Are you mad? You must be to let your guard down in a place like this. A place like this- a cold finger stroked my spine alluringly. No. I would not fall under the thrall that this god-forsaken pit of despair held so many desperate souls captive. Finally, the casting; the lights dimmed. To my utmost dismay, my scene was one in which I would be locked in a sterile white box, lit only by flickering fluorescent bulbs, reminiscent to an interrogation room. And, oh, the awfulness of it all- this was Elmo’s element. The little beast would be allowed to torment me in whichever way he wanted. The gentle gleam of a red recording light flicked on. I started. The director rolled his eyes, raising his lip in a faint snarl. I gulped. A high, coldly, hysterical laugh suddenly tore through my ears. My apologetic grin froze oddly, and then trickled away. “HELLO, KIDS! Are you ready to have some fun with Miss Laney now?” The freakish animal giggled again as I gazed at it, eyes filming over in panic. The words had an unmistakably ominous ring to them. It was as I had imagined- menacingly bulky, the whites of its eyes rolling manically. The shrill, heavily engineered voice grated out again. “So, Miss Laney, can you tell all the kiddies what you do?” “I-I…” I had no wish to be regarded as incompetent as well as a dim-wit, so I choked the rest out. “I’m a recording artist,” I finished, voice strangled. The face’s beam widened considerably, teeth glinting peculiarly. “Would you sing us a songy-wongy?” the abysmal animal pleaded falsely, simpering grossly. I glanced sharply at the director- he bit his lip and shrugged, then mimicked taking the microphone the beast had produced from somewhere within the depths of its appalling costume. This hadn’t been part of the contract. The thing advanced ominously, steps tight and measured, but with a quiet feline grace. Its eyes glistened in its sockets. My voice cracked as I screamed, voice piercing with a sinking dread. Out of the corner of my eyes, I caught a glance of the director, nose wrinkled in disgust, pull out a walkie-talkie. His voice was heavy with fatigue as he spoke into it, voice crackling forebodingly as it crossed the reception line. “Security, please,” he growled.
    
    • ANSWER:
      I like it, though it is a lot of description packed into each sentence. So it is a lot to handle. But nice.
      
29. QUESTION:
    Biology Help (pGLO Transformation) Can you answer any of these questions? 1. if growth appeared on the LB/amp +DNA plate, would these bacteria... be transformed? Explain. fluoresce under UV light? Why or why not? 2. Why is the gene splicing product called recombinant DNA? 3. Why is it important to use the same restriction enzyme for making the cuts in both the plasmid and the human DNA? 4.Although transformed cells appear white, with the same phenotypic expression of the wild-type bacteria when the growth media lacks arabinose, they will fluoresce green with a long-wave UV lamp when arabinose is present. Explain why this color change occurs. 5. Provide a rational or benefit of adding DNA sequences coding for fluorescent proteins such as GFP, to tag genes o interest in plasmids used for transformation.
    
    • ANSWER:
      1. Yes, they are transformed because only bacteria with the gene for ampicillian resistance can grow on the amp plates. The bacteria that fluoresce are also transformed, because they are expressing the pGLO gene. 2. The splicing product contains DNA from both the host and the insert, recombined into one molecule. 3. each restriction enzyme leaves a different sequence on the sticky ends, so if you used different kinds your host DNA and the insert would not recombine. 4. I can't answer this one 5. So that, even if the gene of interest was not expressed, you could tell if the cloning was successful.
      
30. QUESTION:
    When is the right time to go on temp disabilty? How does one approach their employer with...? ...that? My dry eye symptoms have worsened lately to the point where I can't work in the office with the fluorescent lighting and AC blowing on my eyes. Also the extensive computer work is causing excessive strain. I am seeing eye dr's and tried all the eye drops & gels and now am being advised to get my tear ducts plugged up. I have Graves disease which is the main cause. I also have blepharitis. I can't even drive in the sunlight at this point without tearing burning and blurring to the point of not being able to see the road. Evening driving is ok. My question is whether I should go on temp disability now or not. I will get full pay benefits up to 26 weeks if need be. Will this hurt my job security and my career? I feel this would be best for me to get away from the computer (10-15 hours a day) and give my eyes a break while a seek out and resolve what I need for my eyes to get healed.
    
    • ANSWER:
      Going on state disability will not hurt your job security. By law your employer has to take you back. However they don't have to give you your same location back to you. Your health is more important then your job my friend. I put off going on disability for 3 years and now I have permanent damage to my legs. My advice to you , is take the time you need to be off and take care of your health problems before it gets to serious and you can't work anymore at all. You can always get another job my friend ' it might not be the same job but you will get back on your feet if you want to bad enough.
      
31. QUESTION:
    Some questions related to environmental health...? 1, Why Should Global Environmental Issues such as Population Growth, Thinning of the Ozone Layer, and Biodiversity of Species Matter to People? 2. List three things that the natural environment provides that benefit health status. 3. A result of a negative visual environment might be: a. better social health c. increased stress b. fewer distractions d. improved concentration 4. According to the World Bank Group, population is increasing by about how many people per day? a. 50,000 c. 200,000 b. 100,00 d. 20,00 5. As of the end of the year 2003, there were about how many people living on Earth? a. 3.1 billion c. 986 million b. 245 million d. 6.3 billion 6. If you are not going to use a fluorescent light bulb for _____, it pays to turn it off a. 30sec c. 30min b. 5min d. 1hr 7. The increase of atmospheric carbon dioxide that contributes to global warming is due primarily to a. an increase in tree planting in many areas of the world b. an increase in the Sun's radiation c. geothermal energy sources d. burning of fossil fuels for energy 8. One condition associated with poverty is a. homelessness c. education b. childlessness d. affordable housing
    
    • ANSWER:
      http://answers.yahoo.com/question/index;_ylt=AqUSonZGKepG56NKcCCKB34jzKIX;_ylv=3?qid=20100612140008AAEOF0Z #1, talk about how People depend on their environment to survive. #2, probably water, oxygen, food, and freedom from pests / carnivores. #3, c #4, you'll have to read the text. #5, probably d #6, guessing 5 min. Turning them on and off makes them fail sooner. This moves mercury releases to the landfill... #7, d #8, a
      
32. QUESTION:
    Bearded dragon advice regarding lighting and supplements.? Hello, I currently use a 5.0 reptiglo for my baby beardie.Is that good? Or not? If not please specify which one is. How about Exo Terra 160 Watt Solar Glo Bulb? It's description is below: * Optimal levels of UVB, UVA, visual light and heat in one bulb * Self-ballasted mercury vapor bulb * Provides the benefits of natural sunlight * Helps prevent metabolic bone disease * Increased UVB penetration distance Or another bulb which is Fluker Sun Spot 160 Watt Mercury Vapor Bulb. OR Zoo Med Repti Sun 10.0 Fluorescent Bulb? What's better, Bulbs or flourecent tubes? Which one would you pick and why? As for the supplements... I heard of a supplement that has all in one, and is the best there is as it is especially made for beardies. It is T Rex Bearded Dragon Calcium Plus. What are your thoughts? Thank you.
    
    • ANSWER:
      Sorry, but I don't know the names of the different UVB/UVA lights. I use a 150 watt basking light for my dragon. The wattage could be different for you depending on how big your dragon's cage is. The temperature should be over 100 in the basking zone. As for supplements, use 2 different ones. I use RepCal calcium and vitamins. Dust your dragon's crickets with calcium everyday and vitamins every other day. I hope this helps.