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any array of light that is visible, an ordered array of the components of an emission or wave


to give off


to take in

nuclear fusion

a nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energy


the distance between two points in the same phase in consecutive cycles of a wave


the number of complete wavelengths that pass a point in a given time


the hight of a wave

contiuous spectrum

rainbow of colors

electromagnetic spectrum

the entire frequency range of electromagnetic waves

emission spectrum

a series of bright lines of particular wavelengths produced by a hot gas under low pressure

absorption spectrum

the spectrum of electromagnetic radiation that has passed through a medium that absorbed radiation of certain wavelengths

electromagnetic radation

the usage of powerful light in order to treat certian desises like cancer

doppler effect

change in the apparent frequency of a wave as observer and source move toward or away from each other


the pitch range of the highest male voice


lower in range than tenor and higher than bass


the lowest adult male singing voice


the highest female


the pitch range of the lowest female voice

speed of sound

340 m/s

speed of light

186,000 miles per second

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