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5.2 Photo./ Spectra

TermDefinition
photoelectric effect The emission of electrons from a metal when light shines on the metal
wave particle duality
Planck's formula Energy = h x frequency
photons particles of light
ground state the lowest possible energy of an atom
excited state when an atom absorbs energy, its electrons move to a higher energy level
continuous spectrum the emission of a continuous range of frequencies of electromagnetic radiation
atomic emission spectrum the pattern of lines formed when light passes through a prism to separate it into the different frequencies of light it contains.
line spectra the set of frequencies of the electromagnetic waves emitted by atoms of the element
emit to give off
eject to force or throw out
Spectroscopy the branch of science concerned with the investigation and measurement of spectra produced when matter interacts with or emits electromagnetic radiation.
Incandescence shining with multiple wavelengths to create "white" light
luminescence light emitted by means other than burning, such as chemical or biochemical action or radiation
Created by: Sara_Kellogg21
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