
Infrared
~ The term "Infra-" means "lower than".
~ Energy whose wavelength is too long to see is "redder than red".
~ Light with such long wavelengths is called "Infrared" light.
NASA.gov
~ The term "Infra-" means "lower than".
~ Energy whose wavelength is too long to see is "redder than red".
~ Light with such long wavelengths is called "Infrared" light.
NASA.gov