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Explorations An Introduction to Astronomy, 3/e
Thomas T. Arny

Light and Atoms

Animations

An Atom Absorbs Light (1456.0K)
An Atom Emits Light (941.0K)
An Electromagnetic Wave (440.0K)
Atmospheric absorption (5458.0K)
How Heating Raises Pressure (6498.0K)
Photons (1092.0K)
The Doppler effect (2977.0K)
The Energy of Electromagnetic Radiation (4039.0K)
The Number of Remaining 13n Nuclei Declines With Time (15485.0K)
The proton-proton chain (1883.0K)
Why Stars Twinkle (9008.0K)