spectroscope
their wavelenghts are different
Sound waves are much longer then light waves.
The wavelength of infra-red light is LONGER than the wavelength of red light, and longer than anything to which the eye responds.
The wavelengths for UV light are shorter than for visible light, but much longer than for x-rays or gamma rays.
Ultraviolet
spectroscope
Most planets absorb energy in the light and UV (and shorter) wavelengths. Planets radiate energy in the infrared (heat) and longer wavelengths.
their wavelenghts are different
Lemons Are Yellow Because Their Skins Absorb All Wavelenghts Of Visible Light Except For The Wavelenghts Corresponding To The Colour we Know As Yellow.
black
jg
Visible light.
very roughly 350 to 750 nanometers
Sound waves are much longer then light waves.
This question is rather loose ended but..Color.
A prism can be used... but there are probably other ways.