T-SERVICE / SCIENCE PHOTO LIBRARY T-SERVICE / SCIENCE PHOTO LIBRARY
Gas stove. Thermogram of a household gas stove heater in operation. The heater flame (orange, yellow and white) is visible through the metal cabinet. A thermogram shows the variation in temperature on the surface of an object, measured by the long-wave infrared radiation it emits. The temperature scale is colour-coded and runs from black, (coldest), through blue, purple, pink, orange and yellow to white (hottest). The hottest areas of the flame are in excess of 400 degrees Celsius.
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