동아사이언스

가장 약한 파(波)―중력파 The Weakest Wave

과학동아 1989년 09호

under Jim Hough. The instrument would consist of two evacuated tubes (tubes from which all the air has been removed, creating a vacuum) at right angles. In each tube, a beam of laser light would be reflected back and forth a thousand times or so. If the tubes are comletely undisturbed, the light-wave will remain in perfect step.If a gravitational wave sweeps over the tubes, however, one tube ...