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Coating Provides ‘IR Camouflage’

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Military camouflage has taken a step forward with the discovery of a coating that, when heated past a certain temperature, looks colder to thermal cameras. A team of applied physicists at Harvard School of Engineering and Applied Sciences (SEAS) tested the coating by placing a material on a hot plate and watching it through an IR camera as the temperature rose. At first, the sample behaved as expected, giving off more IR light as it was heated: At 60 °C, it appeared blue-green to the camera; by 70 °C, it was red and yellow; and by 74 °C, it was a deep red. Then...Read full article

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