Nature of Light

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8 Terms

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EM wave

Transverse wave consisting of oscillating electric and magnetic fields

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Proton

A packet of energy of EM spectrum

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Photoelectric emission

Emission of electrons from a metal surface when EM radiation of sufficient energy is incident on it

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Threshold frequency

Min frequency of radiation required to eject electrons from a metal surface

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Work function

Min energy required to remove an electron from a metal surface

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Energy level

Discrete value of energy that an electron in an atom can have

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Excitation

Electron gains energy and moves to a higher energy level

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Ground state

Lowest possible energy that an electron in an atom can have