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caption

Lithium burning in the flame of a bunsen burner producing a red flame. The colour of the flame is caused by electrons that have been excited to a higher energy state. When they relax they emit energy in the form of a characteristic wavelength of light. The colour of the flame is different for different elements and can be used to identify unknown substances.

headline Science Source General Science

created date 2010-02-13

credit EAST NEWS

source Science Source

byline Richard Treptow

original transmission reference 6y9911

weight 1,52MB

size 19cm x 29cm by 300dpi

keywords - Show

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