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 Posted: Mon 22:42, 12 Aug 2013 Post subject: Sunlight falls on a pair of reading glasses and a |
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Sunlight falls on a pair of reading glasses and a pair of dark glasses,[link widoczny dla zalogowanych]
This is tough. I would say that they are equal or that the regular glasses would be warmer,[link widoczny dla zalogowanych]. Can you start fires by shining light through glasses?
Well. gosh I should have paid more attention in science class lol. Hold on, let me think.
Okay, the darker glasses would be warmer because dark colors absorb more light and more thermal energy. The area around the regular glasses would be warmer because the light shining through the glasses displays the the visible light spectrum,[link widoczny dla zalogowanych], reflecting the thermal energy.
The dark glasses would become warmer, all other factors being the same.
This is because the energy in the light is being converted to heat. The more light that "lodges" in the matter of the glasses, the more energy gets converted and so the more heat.
Dark substances absorb more light than light ones,[link widoczny dla zalogowanych], and especially than translucent or clear substances (I assuming the reading glasses are "clear".) In the reading glasses more light passes through them (and thus does not get converted to heat) than what passes through the dark glasses.
If you wear glasses and require additional reading glasses would you opt for two separate pairs ie distance pair and reading pair or would you opt for bi focals
do you think that a pair of hubble telescopes would make good reading glasses
I looking for a pair of sunglasses I bought a pair of fakes in Puerto Rico that BROKE and I threw them away. Now I like to buy a real pair. They look like predators but they have a leather aligator type feel on the side of the glasses.
I am going to have to get glasses. I know that I am going to need reading glasses and I might need some for general wear (do not know yet),[link widoczny dla zalogowanych]. Which is easier to adapt to. bifocals or two pair with different prescriptions? I have never worn glasses before
I wear glasses for READING ONLY! I have them lying all over the house as I constantly needing to see something up close! Today I tried to put a pair on WHILE I STILL HAD A PAIR ON and didn realize it! Are you LAUGHING YET or have you done it yourself,[link widoczny dla zalogowanych]?
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