Replay: Several very important pieces of film and TV technology rely on the assumption that human beings can see green light best and that we can see sharp edges most clearly when they're rendered in ...
IF a circle, 2 cm. in diameter, is divided into quadrants and coloured as in Fig. 1, placed on either a black or white ground, and then viewed with one eye from a distance of about 3 m., it will be ...
People with red-green colour blindness find it difficult to tell red hues from green ones because of a fault in a single gene. Their inheritance robs them of one of the three types of colour-sensitive ...
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