EDWARD KINSMAN / SCIENCE PHOTO LIBRARY EDWARD KINSMAN / SCIENCE PHOTO LIBRARY
Thermogram of an energy efficient fluorescent light. These lights use less energy than incandescent lights and operate at a cooler temperature. The different colours represent different temperatures. The lightest colours are the hottest temperatures, while the darker colours represent cooler temperatures. Thermography uses special cameras that can detect light in the far-infrared range of the electromagnetic spectrum (900-14,000 nanometers or 0.9-14 µm) to create an image that represents an objects temperature.
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