Word: thermogram
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Dates: during 1970-1979
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...then recorded on color film, with each hue representing a different temperature range. Colors are arbitrarily selected. Warmest areas are represented by shades of red and orange. Medium temperatures come out in yellow and green, while the coldest spots are violet, blue and black. The advantage of a color thermogram over black and white is that most people can distinguish vivid colors more easily than shades of gray...
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