Raymond Baxter reports.

The story of the M.A.S.E.R.: Micro-wave Amplification by the Stimulated Emission of Radiation.
Tonight's Eye on Research shows one of the most important developments on the frontiers of physics. Outside Broadcast and film cameras visit scientists who are making crystals and using them to amplify the whispers of radio noise from outer space.

From The Clarendon Laboratory Oxford; The Royal Radar Establishment Malvern;
The Office of Naval Research Washington, D.C.