Technical Note Oil Spill Detection with Infrared Imagingcameras. The sun is peaked in the visible part of the EM spectrum, around 500nm in wavelength, so there is plenty of interference when trying to see oil on the water surface. Solar radiation in the longwave IR band that is diffusely reflected from the water surface is orders of magnitude weaker and is hardly noticeable near normal incidence. Even on a cloudy day where the visible l

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