Theoretically, the light would be very slightly blue-shifted because the helicopter is coming closer to you.
blue and yellow
It is the color of the light shift. either red or blue, from an object, not the object itself, that determines if it is moving away( RED) from us or moving toward us (BLUE).
black paper burns the fastes because it is thick and heats the quickest
Red travels fastest Violet slowest.
A black cup would make the ice-cube melt the fastest becauseblack substances trap in more heat than any other color.
blue and yellow
It is the color of the light shift. either red or blue, from an object, not the object itself, that determines if it is moving away( RED) from us or moving toward us (BLUE).
A purple helicopter is a helicopter of the color purple. Really?
The color black heats the fastest, as (according to Proff. Planck) it is the color which absorbs the most Heat energy.
Orange and white.
Water has no color!
it can be any thing.
Black
.
Blue
black
If light is subject to the Doppler effect, it will change color. The light changes color toward the lower (red) end of the spectrum or the upper (blue) end of the spectrum. Which way the color shifts depends on whether the distance between the source and the observer is increasing or decreasing. Should we find the distance is increasing, the light will be shifted toward the red end of the spectrum. This is called redshift (one word), and astronomers know this well because most all galaxies are speeding away from the Milky Way and have their light shifted toward the red end of the spectrum. If the distance between a source and observer is decreasing, the color of the light will be shifted toward the blue end of the spectrum. In either case, the amount the color is shifted will be determined by the rate the distance between the source and observer is changing. If a galaxy is moving away from the Milky Way, we'll see a shift toward red, and if another galaxy is moving away faster, will see a greater shift in the color of the light from it.