Want this question answered?
Blue what ? ! ? Do you mean an object that appears blue in white light ? Such an object appears black in green light.
Red Light
when under a red light.
It will be green
is made up of all colors of light .
This is a simple answer. Our eyes require the reflection of white light from an object in order to see it. If there is zero light in a room that is totally dark we can see nothing.
Light appears white, however it is made up of different colours, which when put together make white light. These colours can be seen if you direct light through a prism. At the right angle the light is split up into the colours (rainbow).
Something appears black if it doesn't reflect any light, and something that appears white reflects every colour simultanously, with the resulting mix appearing white.
White it looks totally flattering in black light and you stand out more than most people.
When an object appears yellow, that means that most of the light bouncing off it is yellow light. If there is light of other colors hitting it, it's absorbing everything else except the yellow.
White light appears white because it is a conglomeration of all the different wavelengths of light. A prism will separate the different wavelengths because they refract (or bend) at different angles through the prism.
Generally, a mirror, as it was literally created to reflect light. However, any white object reflects light (it appears white as it reflects all colored light in the visible light spectrum).