Why does all light have a wavelength between about 400 and 700 nm?
A)Wavelengths outside that range cannot travel very far through the air.
B)We define light as the wavelengths that stimulate our receptors.
C)Wavelengths outside that range travel more slowly.
D)The air acts as a prism to convert other wavelengths toward this range.

Question

Why does all light have a wavelength between about 400 and 700 nm?​
A)Wavelengths outside that range cannot travel very far through the air.​
B)​We define light as the wavelengths that stimulate our receptors.
C)​Wavelengths outside that range travel more slowly.
D)​The air acts as a prism to convert other wavelengths toward this range.

Quizplus · Accepted Answer

The visible spectrum (400-700 nm) is defined as the range of wavelengths that stimulate our visual receptors, called rods and cones, in the human eye. Therefore, all light within this range is considered "visible light."

Why Does All Light Have a Wavelength Between About 400