This consists of a range of wavelengths from about 400 nanometers to 750 nanometers and frequencies ranging from 400 THz to 800 THz. It is the only portion of the EM spectrum that humans can see.
This consists of a range of wavelengths from about 400 nanometers to 750 nanometers and frequencies ranging from 400 THz to 800 THz. It is the only portion of the EM spectrum that humans can see.