Thermograph of a bunsen burner flame

Thermograph of a bunsen burner flame

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Credit: DR RAY CLARK & MERVYN GOFF/SCIENCE PHOTO LIBRARY.

Caption: Thermograph of a bunsen burner flame, showing variation in temperature throughout. Colour coding (see bar at bottom) ranges from blue (coldest regions) through green & yellow to red (hottest region). The hottest parts of the flame are seen in centre (red & yellow), with flame temperature decreasing towards the edges. The cooler green "spike" above the burner's nozzle (base of flame) indicates the stream of unburnt gas (ie methane) entering the flame.

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Keywords: bunsen burner, chemical, chemistry, combustion, flame, thermogram, thermograph, thermography

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