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Flame emission spectrum of copper

Flame emission spectrum of copper

A150/0153

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Credit

PHYSICS DEPARTMENT, IMPERIAL COLLEGE / SCIENCE PHOTO LIBRARY PHYSICS DEPARTMENT, IMPERIAL COLLEGE / SCIENCE PHOTO LIBRARY

Caption

Emission spectrum of copper. When atoms of an element are excited (for instance by passage through a flame) they return to their state of lowest energy by emitting radiation at specific wavelengths. If this radiation is passed through a spectrometer, a spectrum is produced which displays the element's characteristic emission "lines". These lines are a unique "fingerprint" of an element. In the case of copper, the emission spectrum is complex, with blocks of lines appearing in blue, green and red. Many fainter lines are not visible in this photograph.

Release details

Model release not required. Property release not required.

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