30.1 MB (676.3 KB compressed)
3247 x 3236 pixels
27.4 x 27.4 cm ⏐ 10.8 x 10.8 in (300dpi)
CLAUS LUNAU / SCIENCE PHOTO LIBRARY CLAUS LUNAU / SCIENCE PHOTO LIBRARY
Photon emission. Computer artwork of an atom (large sphere) emitting a photon (yellow). The atom consists of a nucleus (blue, centre), which contains neutrons and protons (not shown), and electrons (red). As an atom absorbs energy and becomes excited the electrons move further from the nucleus to higher energy orbits (blue circles). Eventually the electrons will release this extra energy, as a photon, and return to their ground state.
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