Page 21 - For Men of Understanding
P. 21

HOW GNATS PERCEIVE
             THE OUTSIDE WORLD
             Gnats are equipped with extremely
             sensitive heat receptors. They
             perceive the things around them in
             different colours depending on
             their heat, as in the picture on the
             right. As its perception is not
             dependent on light, it is quite easy
             for the gnat to spot blood vessels
             even in a dark room. The heat
             receptors of the gnat are sensitive
             enough to detect heat differences
                            o
             as small as 1/1,000 C.




                                                                  The Four Animals Emphasised in the Qur'an  19
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