It is reflecting the RED light back to your Eye. The same would be true for any other colors that are shined onto the surface.
If you put a piece of white paper under a green light all that will happen is the paper will turn green. The only time this will vary is if you have special ink that will show up under certain colored light.
Paper will appear to be black under a red light because red light has a long wavelength and is less likely to reflect off the white surface of paper.
The paper appears dark because red light is absorbed by the blue pigment, not reflected. The blue pigment absorbs red light and reflects blue light, which is why the paper appears blue under white light.
White paper appears to glow under a black light because the phosphors in the paper fluoresce when exposed to the ultraviolet light emitted by the black light. This causes the paper to emit visible light, creating the glowing effect.
When you blow under a piece of paper, the air flow creates a low-pressure area under the paper, causing it to bend towards the side with higher pressure (usually the top side). The pressure difference between the top and bottom of the paper results in a lifting force that causes the paper to bend.
If you put a piece of white paper under a green light all that will happen is the paper will turn green. The only time this will vary is if you have special ink that will show up under certain colored light.
Paper will appear to be black under a red light because red light has a long wavelength and is less likely to reflect off the white surface of paper.
turquoise(or turquiose)
The paper appears dark because red light is absorbed by the blue pigment, not reflected. The blue pigment absorbs red light and reflects blue light, which is why the paper appears blue under white light.
Here's an example of pencil rubbing: Put a coin under a piece of paper and lightly rub it with the side of the pencil lead and the details of the coin will appear!
The red pigment in the paper will absorb all colors except red, which will be reflected. When yellow light shines on the paper, which contains red pigment, the red pigment will absorb the other colors in the yellow light spectrum but reflect the red light. So, the paper will appear red under yellow light.
White paper appears to glow under a black light because the phosphors in the paper fluoresce when exposed to the ultraviolet light emitted by the black light. This causes the paper to emit visible light, creating the glowing effect.
When you blow under a piece of paper, the air flow creates a low-pressure area under the paper, causing it to bend towards the side with higher pressure (usually the top side). The pressure difference between the top and bottom of the paper results in a lifting force that causes the paper to bend.
it would appear black because no red light strikes it
vacuum
you put a towel or a piece of dry wall, get a new door, piece of paper
No, a single piece of paper is not designed to hold 200 pounds. The weight would exceed the paper's structural integrity, causing it to tear or collapse under the pressure.