25.0 MB (729.8 KB compressed)
3415 x 2563 pixels
29.0 x 21.6 cm ⏐ 11.4 x 8.5 in (300dpi)
T-SERVICE / SCIENCE PHOTO LIBRARY T-SERVICE / SCIENCE PHOTO LIBRARY
Hydroelectric dam. Thermogram of sluice gates at a hydroelectric power station. 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 purple (coldest), through blue, green, yellow and orange to red (warmest).
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