Even if experimenters bounce the beams to and fro to increase the effective length of an interferometer's arms to more than 100 kilometres, the expected difference in length between the two beams' paths still amounts to less than a hundred-millionth of th
Even if experimenters bounce the beams to and fro to increase the effective length of an interferometer's arms to more than 100 kilometres, the expected difference in length between the two beams' paths still amounts to less than a hundred-millionth of th
尽管已经让激光束反复反射来使激光干涉管臂的有效长度增加到超过了100公里，但在光路路程之内，两束光波长差仍小于氢原子直径的一亿分之一。