IN a letter on “The Intensity of X-ray Reflection from Powdered Crystals” (NATURE, July 8, p. 38), Prof. A. H. Compton and Mr. N. L. Freeman have described some measurements which they have made on ...

Describing Satyajit Ray as a great director and also a great thinker, noted film director Govind Nihalani on Friday said that Ray's films were a reflection of his thoughts which began right from the ...

This is a preview. Log in through your library . Abstract Ray methods have been widely used to calculate high frequency scattering by objects in an unbounded medium, but they have not been used much ...