Current location - Training Enrollment Network - Early education courses - Sunlight is usually red and yellow (longer wavelength). Why short wave radiation? Seen from space, the earth is roughly blue (short wavelength). Why does the ground radiate? ...
Sunlight is usually red and yellow (longer wavelength). Why short wave radiation? Seen from space, the earth is roughly blue (short wavelength). Why does the ground radiate? ...
The sun emits seven colors: red, orange, yellow, green, blue, blue and purple. Each color has a different wavelength. Red, orange and yellow have the longest wavelength and the strongest penetration, so most of them enter the earth's surface, so the sun we see is red or yellow, and purple can hardly enter. Blue light scatters in the atmosphere, so the sky we see is blue.