page 336Wireless WorldNovember 1945

In Brief

World of Wireless

Electronic Astronomy

Some interesting applications of electronic technique to astronomy are given in a paper in the Journal of the British Astronomical Association, communicated by Arthur C. Clarke. who wrote recently in this journal on "Extra Terrestrial Relays." Among the subjects dealt with are the use of photocell circuits to provide automatic following for stellar photography, television scanning methods of star counting and the possibility of using radar technique for the precise measurement of interplanetary distances.