Interactions Between Light and Matter

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7 Terms

1
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X-rays

-excites core electrons
-used in medicine for invasive imaging
-causes cell mutations so limit exposure

2
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Radio waves

-excites spin of nucleus used in MRI
-responsible for AM, FM radio

3
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Micro waves

-excites spin of electrons
-excites rotation of H2O and fats around 12 cm to cook food

4
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Infrared

-causes vibrations in molecules
-used in night vision goggles
-excites wavelength of -OH used in ethanol, used to measure

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Visible

-excites valence electrons to higher energy level
-solution for H-atom (Balmer series)
-rays of detection for human eye

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UV

-excites valence electrons
-Lyman series for H emission
-causes sun burns

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Gamma-rays (Cosmic rays)

-associated with decay of atom nucleus
-are emitted from stars