Science Source December 28, 2009 DVD
EN_00957730_1050
Radiative heat transfer (thermogram). Shown here is a thermogram of an incandescent lamp shining on a surface whose left half is black while the right half is white. Radiative energy heats up the surface thus raising its temperature. Because the black half absorbs more radiation, its temperature increase is greater than that of the white half. 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.
2011-03-20
EAST NEWS
Science Source
GIPhotoStock
bp0674
0,39MB
20cm x 25cm przy 300dpi
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