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6
votes
1answer
481 views

Do fluorescent lights use more power to turn on?

I have been told time after time that at school if you are not going to leave the room for more than 10 minutes to keep the lights on instead of turning them off because the amount of power it takes ...
21
votes
3answers
894 views

Does the phase-out of incandescent light bulbs measurably reduce overall electrical power consumption?

Many countries are phasing out incandescent light bulbs. For example, in the European Union, various types of classic light bulbs have been removed from the market in the last years. The claim is ...
11
votes
4answers
5k views

Do LED lights of any colour damage your eyes?

There is a Daily Mail article from May 2013: Do 'environmentally friendly' LED lights cause BLINDNESS? In the article, they specifically focus on blue LED lights and the wavelength of this light ...
5
votes
0answers
135 views

Does milk sold in a store with good product turnover lose a significant amount of Vitamin B2 from light exposure?

Anchor New Zealand has just released a milk bottle with a black plastic layer to protect the milk from exposure to light, and thus from loss of "taste and goodness". Their chart: from their website ...
7
votes
1answer
150 views

Does florescent lighting in schools correlate to increased illness and behavior problems?

A morning talk radio program was discussing Scotopic sensitivity syndrome and made the claim that in schools where Florescent lighting had been replaced with indirect non-florescent lighting had more ...
7
votes
1answer
339 views

Do light boxes help Seasonal Affective Disorder?

Light boxes are sold as a treatment for seasonal affective disorder (SAD) and seasonal mood swings. The claims listed are: Helps to ease seasonal mood swings and winter depression, and help ...
16
votes
2answers
4k views

Can blue light from LCD panels cause damage to the eyes?

In Japan there is quite a fad about LCD blue light filtering and how they might help reduce eyestrain, etc. The web site of a major computer accessory manufacturer has an English-language press ...
5
votes
1answer
2k views

Can blue light therapy contribute to Age-related Macular Degeneration?

High-intensity, broad-spectrum light has been an effective therapy for Seasonal Affective Disorder (SAD). More recently and less proven blue light therapy has stemmed from the discover of ganglion ...
0
votes
3answers
2k views

Evidence for the absolute speed of light

I'm wrapping my mind over Einstein's Special Relativity. He postulates an abolute speed of light which concludes (in my perspective) to several illogical paradoxes. Is there any evidence, that the ...
14
votes
2answers
9k views

Do Valkee bright light headsets reduce SAD symptoms?

This is old news in Finland by now, but I don't know if these products are well known elsewhere yet. The idea of Valkee headsets is bright light therapy with a twist—the light is channeled through ...
10
votes
1answer
6k views

Do fluorescent lights cause stress?

I have heard that fluorescent lights are generally bad for you. The explanations range from the light being in the blue area of the spectrum: The signature "glow" of fluorescent lighting is ...
1
vote
0answers
270 views

electromagnetic field alters directional path of light [closed]

Is there any scientific study suggesting that Einstein's analysis on light perhaps bending due to high electromagnetic fields rather than spacetime is true? If this study is or ever was in effect ...
19
votes
1answer
3k views

Is it preferable to use a computer in a darkened room?

In his latest blog post, Jeff Atwood states: We computer geeks like it dark. Really dark. Ideally, we'd be in a cave. A cave … with an internet connection. The one thing that we can't abide ...