Suppose that sunlight falls both on pair of reading glasses and on a pair of dark sunglasses. Which pair would be warmer? Why
2007-02-13 14:06:49 · 3 answers · asked by Melissa 2 in Science & Mathematics ➔ Physics
Sunglasses are designed to cut off most of the high intensity light rays from the sun (or cut off the glare)by absorbing them.This means that a part of energy of incident light is absorbed which manifests as heat(dissipative heat). So the dark sunglasses would be warmer.
2007-02-13 14:58:10 · answer #1 · answered by Prabhanjan 2 · 0⤊ 0⤋
I just answered your other question, and apparently, you're not doing your science homework tonight. Anyway, I'm not here to judge. To answer your question, the pair of dark sunglasses would be warmer because darker colors, such as black, attract more sunlight. A lighter color, on the other hand, reflects most of the light that comes from the sun, which doesn't allow it to become as warm. I'm not sure of the exact reason for that right now, but I think that's mostly what you need for your answer.
2007-02-13 22:14:34 · answer #2 · answered by Stupid Flanders 4 · 0⤊ 0⤋
Any object's optical properties can be summed up with:
transmission+reflectance+absorption = 100%
Since sunglasses do not transmit and do not reflect (being dark), what's left?
2007-02-13 22:10:21 · answer #3 · answered by arbiter007 6 · 1⤊ 0⤋