AN optical maser, using a good-quality ruby crystal with plane-parallel reflectors, oscillates in modes corresponding to Fabry–Perot resonances. Oscillations are shown to occur at several ...

The light-shadow experiment began when physicists led by Raphael Akel Abrahao sent a high-power beam of green laser light through a cube-shaped ruby crystal. They then illuminated this beam from the ...

In March 2024, a federal grand jury indicted Jerry Hal Saliterman of Crystal for his role in the infamous heist of the ...

A defense attorney says a man accused of long hiding a stolen pair of ruby slippers that Judy Garland wore in “The Wizard of ...