Question

Why are infrared radiations preferred over ordinary visible light for taking photographs in fog?

Answer 1

In the visible spectra, we know that red has the maximum wave length and can travel long distances without disturbance. As, infrared rays have more higher wavelength than red, they travel more stedaly i.e, without disturbance that helps for clear pictures. Hence, they are used in taking photos..

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Answer 2

The longer, stretched out waves of infra purple mild, in contrast to the quick condensed waves of the seen spectrum, specially on the blue end, can extra conveniently weave their way by way of the water droplets that kind fog. The tighter waves of the noticeable spectrum reward a greater entrance which collides with the tiny water droplets and are mirrored away, so they do not penetrate. Hence we can not see by way of fog lit by using "ordinary" mild, whereas the long, stretched out infra pink waves penetrate the fog more conveniently, enabling us to "see by means of" it

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