about 9 hours ago - No comments
Question by : Is there anyone in California who wants solar energy and doesnt know where to get it? Hi i have a lot of questions in regards to solar energy, and im really interested in it for the sake of California. Is there anyone who feels the same way i do? please include your
about 14 hours ago - 9 comments
Question by Belle: How to save energy at schools? I’m doing a speech on preventing global warming and starting the fight at our homes and schools. I need some good ideas on how to conserve energy in schools. Please Help!! —————————————— Answer by Cap10Walk or ride your bike to school when the weather is good
about 1 day ago - 2 comments
Question by wilhem: 100wt energy saving bulb in a socket rated for a 60wt standard bulb? My standard ceiling light sockets suggest that I use standard 60 watt bulbs. The cold light of a 60 watt flourescent bulb is just not enough light. Can I use a 75 or 100 watt flourescent bulbs instead. ——————————————
about 2 days ago - No comments
Question by committed1985: To save energy on a sunny winter day, is it better to let the sun in the windows or draw the thermal curtains? Both are excellent answers. Thank you! I do have a big gap at the top of my energy curtains, so I have to fix that. My windows are old,
about 2 days ago - No comments
Question by Ashley J: How much solar energy (kJ) would have to be…? How much solar energy (kJ) would have to be transferred to a 145.0 foot length of asphalt highway that is 49.0 feet wide and 25.0 centimeters deep in order to raise the temperature 5.00 oC ?The average density of asphalt is 721
about 4 days ago - 6 comments
Question by PHIL: Is it true that one can save some cost of electricity by pulling the plug out of the receptacle? Is it worth the effort? —————————————— Answer by Chuck PThat would be on things that have pre warmers in them like TV sets, no it’s not worth the effort. Answer by William Bonly
about 5 days ago - 1 comment
Question by vyra h: Is it safe to unplug your personal to save energy? Will you lose any of your info? —————————————— Answer by Brian SYou’ll want to turn it off before you unplug it, but no… there is no danger of losing what is stored in that case. Answer by John RIt’s safe but
about 5 days ago - 4 comments
Question by : Why is Germany good for using wind energy? I know they use it, but what are some features of Germany that allows them to use it? —————————————— Answer by Haydenwind? Answer by Graham EarleIt’s the German diet which produces abnormally high levels of flatulence. Answer by ninaCause there is a lot of
about 6 days ago - No comments
Question by T: What is your view on people being allowed to dry their clothes outside in order to save energy? A number of states are making it against the law to dry your clothes outside on clothes lines. Is not this going green like we have been told to do?? What is your view
about 6 days ago - No comments
Question by bballer: What are some environmental benefits of Wind Energy? I can’t find any good sites. A good reply would be great but a good site will be worth an simple 10 points. Thanks! —————————————— Answer by Headtater0 carbon electricity. It is as simple as that. The wind is free and is abundant. The
about 1 year ago
The make light, but don’t make heat.
Most of the wasted energy involved in making light is making waste warmth as a by-product.
about 1 year ago
They save money because they use less power to make them work. They are flat because there is no reason to make them fat, round, or any other shape.
about 1 year ago
one LED light bulb for home uses less than 1 watt of energy. they are designed differently. look for pictures. you can put them in any shape. and new laws requires street lights to reduce light pollution at night. can you still see the stars? if they are flat, designed in a specific way, they wont light up the sky.
except I heard something about blue light hazard from LED lights. I hope they wont damage anyones eyes.
this is what LED is. Light Emitting Diode.
http://upload.wikimedia.org/wikipedia/commons/f/f6/LED_label.jpg
http://upload.wikimedia.org/wikipedia/commons/9/9e/Verschiedene_LEDs.jpg
http://www.reuk.co.uk/OtherImages/led-spotlights.jpg
LED save energy cause they work differently. incandesent light bulbs heat up the filament (the wire) and thats how they shine. for energy efficient lights electric current excites mercury vapor, so then mercury atoms produce short-wave ultraviolet light that causes phosphor to produce light. and LED emit light when the electric current goes through it.