Optics. Franchesko Grimaldi

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It is strange that Newton, apparently, absolutely ignored diffraction occurrence. It has been opened Franchesko Grimaldi (1618 1663) which, possibly, has tried to execute ' limiting experiment '. We will note, what exactly in attempts to learn, under what limiting conditions everyday occurrences cease to take place, the new is opened a lot of.

In this case the problem consists in sharpness of a shade; well-known that an extended light source, we will tell the Sun, gives shades with dim edges and that than less source, shades are especially sharp. It is possible to finish sharpness of a shade to what degree? Grimaldi has established that if to use as a light source the small shined pin aperture shades are again washed away, moreover, there are ' parallel strips, and in the neighbourhood with them numbers of colour strips '. Grimaldi spent the supervision, using the sunlight getting into the blacked out room through a small hole. This effect was ' pereotkryt ' Gukom in 1672

It was considered as the best mechanic of time though in the field of its interests many branches of knowledge - from astronomy to biology got.

Newton has become interested in these phenomena and itself has repeated experiment. It has received more extensive results, using various apertures of different diameter.

And here Newton brings us. Having executed a great number of experiences and having measured, ' as rays of light are bent at passage about bodies ', he notices suddenly: ' but then to me have prevented, and now I cannot think of the further consideration of these things '. And it leaves studying of this phenomenon not finished.

Newton used the fact of rectilinear distribution of light as argument against its wave nature as waves are bent behind obstacles. Newton's corpuscular representations have detained progress of optics more than for 100 years.