Question

If a = xcos’a+ysin’a , then (x – a) (y – a) + (x - y)2 sin’ a
cos’ a =​

Answer 1

Answer:

Tyndall effect, also called Tyndall phenomenon, scattering of a beam of light by a medium containing small suspended particles—e.g., smoke or dust in a room, which makes visible a light beam entering a window. The effect is named for the 19th-century British physicist John Tyndall, who first studied it extensively.