radar has definitions from the field of physics
[ noun ] (physics) measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects

Used in print

(J. F. Vedder, "Micrometeorites", in Francis S. J...)

In_addition , the size distribution obtained from visual and radar observations of meteors may be extrapolated to the micrometeorite domain .

The flux of micrometeorites in the neighborhood of the Earth can be estimated by extrapolation from radar and visual meteor data .

A summary of meteorite data , prepared by Whipple ( 1958 ) on the basis of photographic , visual , and radar evidence , is given in Table 5 - 1 .

A concentration distribution has been derived from radar observations sensitive to the fifteenth magnitude ( Manning and Eshleman , 1959 ) .

Also , it has been suggested that the source of all or part of the dust may not be the same as that for visual or radar meteorites ( Best , 1960 ) , and the same distribution would not be expected .