Since a black object absorbs all colours of white light, no colour can reach our eyes, so it must be invisible since we cannot detect any colour from that object. But it does not happen so, Why ?
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We have a black object in the middle of many other objects or background.. so all the light rays are absorbed by the black object, so the object is not visible. But we see the dark area among other contrasting colored objects, so we identify the black object..
If in the night, in a closed dark room, we try to identify a black object through vision, it is not possible.
Also the black object radiates some of the energy .. so the heat from the radiation can be felt... Further, there may be some impurities on the black object, that reflect light , in small quantities at some spots.. Thus all these factors help us identify black objects.
Our eyes and brain do intelligent work to identify the black objects through gained knowledge.
If in the night, in a closed dark room, we try to identify a black object through vision, it is not possible.
Also the black object radiates some of the energy .. so the heat from the radiation can be felt... Further, there may be some impurities on the black object, that reflect light , in small quantities at some spots.. Thus all these factors help us identify black objects.
Our eyes and brain do intelligent work to identify the black objects through gained knowledge.
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