"If Franson's ideas turn out to be correct, virtually every measurement taken and used as a basis for cosmological theory, will be wrong. Light from the sun for example, would take longer to reach us than thought, and light coming from much more distant objects, such as from the Messier 81 galaxy, a distance of 12 million light years, would arrive noticeably later than has been calculated—about two weeks later. The implications are staggering—distances for celestial bodies would have to be recalculated and theories that were created to describe what has been observed would be thrown out. In some cases, astrophysicists would have to start all over from scratch."
http://phys.org/news/2014-06-physicist-slower-thought.html
http://phys.org/news/2014-06-physicist-slower-thought.html
Vastaukset 3
Vanhimmat
Eikös valo kulje eri olosuhteissa eri nopeuksilla? (Esim. vedessä, ilmassa, lasissa, tyhjiössä yms.)
Niin. Valon nopeus tietyissä tilanteissa voi olla mitä vaan, mutta valonnopeus on ainakin nykyisen tiedon pohjalta aina vakio c.
Itse asiassa metri määritellään nykyään valonnopeuden avulla ja se on matka, jonka valo kulkee tyhjiössä 1:299 792 458 sekunnissa.
Jos joku muuttuu, niin se on metri.