Science Source December 28, 2009 DVD

EN_00957730_1056

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caption

LED and incandescent bulbs (thermogram). Shown here are two thermograms of an LED bulb (left) and an incandescent bulb (right). The same color-to-temperature mapping was used. The bulbs are rated to produce about the same amount of visible light. Compared to the incandescent bulb, the LED bulb is several times more efficient and produces less wasted heat as is manifested by the lower temperature. Thermography is a technique for visualizing the temperature of objects by recording the thermal emission intensity at long infrared wavelengths. This image was acquired with a specialized camera that uses a focal-plane array of vanadium oxide microbolometers as a sensor. It is sensitive to electromagnetic radiation in the wavelength range of 8 to 14 micron. The camera produces a 320x240-pixel image where different colors correspond to different temperatures.

headline Science Source December 28, 2009 DVD

created date 2011-03-20

credit EAST NEWS

source Science Source

byline GIPhotoStock

original transmission reference bp0680

weight 0,33MB

size 25cm x 16cm by 300dpi

keywords - Show

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