It appeared as a mere spot of red light flashed last week on a screen. But scientists of Bell Telephone Laboratories at Murray Hill. N.J. are sure their new gadget, called a maser. from which the ...

OPTICAL, maser oscillation has been obtained during the recombination period following a pulsed radiofrequency or d.c. discharge in helium mixed with either neon or carbon monoxide at wave-lengths of ...