SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY
Bunsen burner flame sequence. Montage showing how the flame of a bunsen burner varies from yellow and flickering to jet-like and blue. This device burns hydrocarbon gases to produce a flame. It is used in the laboratory as a heat source in experiments, or for flame tests. The flame is controlled with a vent that is closed to produced the yellow flames, but when fully open draws air into the combustion mixture, leading to a stronger, hotter, blue flame. For a sequence and montage showing the different types of bunsen burner flames, see images C010/9562 to C010/9566.
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