Dykkerure

[ChronoMaster]

Mikael Lange Skrev:The helium escape valve was specially developed by Omega for use by professional divers. During deep-sea dives lasting several days, divers operate from diving bells. Prior to surfacing, these bells are filled with a mixture of helium and oxygen. The helium molecules are lighter than air and can therefore penetrate the watch in sufficient quantity to push out the crystal at atmospheric pressure levels. This can be avoided by opening the valve during resurfacing, which allows the helium to escape but prevents water from entering the watch.



er det svar nok?

Ja, tak. Det var et fint svar.

Der er også stor forskel på det første du skrev (hvor det fremgik at helium blev _dannet_ inde i uret) og så at befinde sig i heliums atmosfære under tryk i _lang_ tid, hvor gassen siver ind i uret.

Mvh.