About colors in physics˙˙˙?

Question

The store outside is yellow light .And there is red light in the store.(Postulate there is no light except for two colors)
Linda wears red clothes.Go into the store from outside.And the clothes's colors will??Is it still red??

P.S:Don't tell me that she wears red clothes!!

What are these colors??

Answer 1

Actually, if you have red clothes under yellow light they should appear to be blackish--because something red under white light reflects maximally in the red--the yellow light is mostly absorbed. Red clothes under red light will appear red, though their contrast with the background will be diminished.

Answer 2

Your question is not that clear, sorry ;-)

But you state very clearly that Linda is wearing red clothes. This means that they're made of a fabric that, when hit by normal white light, which is made of all wavelenghts (colours), reflect only the wavelength corresponding to red.

Under a lamp emitting only red light, Linda's dress will continue to look red, because it will be able to reflect that light towards your eyes.

Under a lamp emitting only yellow light, then Linda's dress can reflect nothing. If the dress is "perfectly" red, and the lamp emits "perfectly" pure yellow light, then the dress will appear black. Now in a real world, the dress will more likely appear some dark hue, brownish possibly.

Hope this helps

a

Answer 3

No, her clothes do not appear to be red, however let’s analyze.

The objects appear to be of certain color because the object transmits or reflects that particular wavelengths of light.

The information you supplied is not sufficient to suggest exactly what one will see by looking from the outside in. We will need to know how close is the wavelength of her clothes is to the wavelength of the light source. Is the observer in the darkness or immersed in the flood of white light.

The objects appear to be of certain color because the object transmits or reflects that particular wavelengths of light. If the frequency of red light will be the same as the pigment the clothes were dyed then in comparison to other color in the room her clothes will appear whitish. The yellow light will bring other yellowish object out of the darkness, but will be mostly absorbed by the red clothes. Also important to keep in mind that both yellow and red are very closely position in the spectrum of light and thus whitish tint will yield to a slightly yellowish/orange color.

I suspect that you know the answer and I would love to know it too :).

Answer 4

When you turn off the lights during a dark night, what colors do you see? black? (black is the absence of colors) That is because light affects our perception of the frequency we interpretate as colors. All colors have a frequency from high (ultra violet) to low (infra red). The colors we percieve is affected by the quantity of light beaming on those differrent frequencies.
Take a colourfull object and look at it in direct sunlight and then bring it inside in a dark room the color wont look the same...

Answer 5

As long as u can see the red light from the outside, It will be red. So, I think yes it is red.

Answer 6

wight clothes