http://en.wikipedia.org/wiki/Michelson%E2%80%93Mor ley_experiment

Six years later he collaborated with Edward Morley, spending considerable time and money to create an improved version with more than enough accuracy to detect the drift.

kopec penazi investovali na to aby urobili interferometer s dostatocnou presnostou.

To make that easily detectable, the apparatus was assembled in a closed room in the basement of the heavy stone dormitory, eliminating most thermal and vibrational effects. Vibrations were further reduced by building the apparatus on top of a large block of sandstone, about a foot thick and five feet square, which was then floated in an annular trough of mercury. They calculated that effects of about 1/100th of a fringe would be detectable.

daj si do translatora :)
ocakavany drift bol 0,4 fringes a tu aparaturu ktoru urobili mala presnost 0,01fringes. Bolo to malo presne?

P.S> a tu http://en.wikipedia.org/wiki/Michelson%E2%80%93Mor ley_experiment#Early_experiments
si citaj kto kazdy to overoval ze neexistuje eter a jakymi vsetkymi inymi sposobmi a jaku dosiahli presnost. A v dalsej kapitole mas co sa overovalo v poslednej dobe (napr. rok 2009) a tam sa hraje uz na presnost 10^(-17), stale ti nestaci?