Blue what ? ! ? Do you mean an object that appears blue in white light ? Such an object appears black in green light.
If an object reflects the entire spectrum of light, it appears white to the human eye. This is because white light contains all the visible colors of the spectrum, and when an object reflects all these colors, it appears white.
Monochromatic light consists of a single wavelength or color, while white light is a combination of all visible wavelengths. White light appears colorless to the human eye, while monochromatic light appears as a distinct color.
In white light, the white object reflects all colors of light and absorbs very little. This is why the object appears white to our eyes.
It will be green
When an object reflects all light waves, it appears white to the human eye. This is because white light consists of all the colors in the visible spectrum, so by reflecting all light waves, the object is reflecting all colors and appears white.
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.
A white fence appears white because it reflects all colors of light equally. When light hits the fence, the pigments on the surface absorb some light wavelengths and reflect others, creating the perception of white. Your eye detects the different wavelengths of light as colors, which are then processed by your brain to interpret the combination as white.
Black absorbs more light than white. White reflects most of the light that hits it, while black absorbs most of the light and therefore appears darker.
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).
A white shirt appears white in white light because it reflects all wavelengths of visible light equally. This means that the shirt does not absorb any particular color wavelength, resulting in the perception of white.
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.