Red and blue are primary colours therefore they do not contain any other colour. When a blue light is shone onto a red object, all the blue light is absorbed by the red object, and as no red light is being shone for the red object to reflect, no light will be reflected from it and it will appear to be black.
It is important to remember that physical colours will only reflect it's light colour equivalent. All other colours are absorbed. So red will reflect red, green will reflect green, and red will absorb green and so on.
A green object will appear dark or black under blue light because it does not reflect blue light well. Green objects absorb blue light, resulting in little to no reflection of this color.
Blue objects absorb most of the red light that hits them, reflecting very little red light back to our eyes. This causes the object to appear black in red light because red light is the only color that can reveal the object's true color.
Under a red light, blue would appear dark or black because red light is absorbed by objects that are not red. Since blue is not a color in the red light spectrum, it cannot reflect or be seen under red light.
A red object shone onto a blue light will appear dark or black as red objects absorb blue light and do not reflect it. The blue light does not contain any red wavelengths for the object to reflect, hence the absence of color.
A cyan object will appear black under red light because red light is absorbed by cyan objects. Cyan is a combination of green and blue light, so when only red light is present, there is no light for the cyan object to reflect or absorb.
A green object will appear dark or black under blue light because it does not reflect blue light well. Green objects absorb blue light, resulting in little to no reflection of this color.
Blue objects look blue because they absorb most of the colors in white light, but reflect blue light. This blue light is then what is detected by our eyes, making the object appear blue to us.
Blue objects absorb most of the red light that hits them, reflecting very little red light back to our eyes. This causes the object to appear black in red light because red light is the only color that can reveal the object's true color.
because the light is so bright it makes it look black
Under a red light, blue would appear dark or black because red light is absorbed by objects that are not red. Since blue is not a color in the red light spectrum, it cannot reflect or be seen under red light.
Black and blue, respectively
black
Black
A red object shone onto a blue light will appear dark or black as red objects absorb blue light and do not reflect it. The blue light does not contain any red wavelengths for the object to reflect, hence the absence of color.
it will look black but I am not sure
Black
Black