For the last installment in a five-part series on great music venues, Rolling Stone polled 26 insiders and musicians â from top managers to Miranda Lambert â and came up with a list of the nation's coolest arenas and stadiums.
The electromagnetic spectrum is a map of all the types of light that we can identify. It separates all the types of light by wavelength because that directly relates to how energetic the wave is. More energetic waves have shorter wavelengths while less energetic waves have longer wavelengths.
The human eye is only sensitive to EM radiation at wavelengths that range roughly between 780 nanometers and 380 nanometers. This small segment is called the visible spectrum or visible light. This is usually what we mean when we speak of light (though, properly speaking, all EM radiation is light). Infrared lies just below red light; ultraviolet exists just above violet light. Both are invisible to humans and other creatures (though some reptiles can see infrared and some insects can see ultraviolet).