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Mark9473
Carpal Tunnel
Reged: 07/21/05
Posts: 2699
Loc: 51°N 4°E
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Re: Argon V Nitrogen
08/10/06 05:54 PM
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some of it is certainly relevant, and some is not.
The choice of gas by itself does not affect the rate of ingress of oxygen or water molecules. The only relevant parameters here are the barrier (i.e. how "airtight" is the item for that particular molecule) and the difference in partial pressure of the gas inside and out.
I'm not sure if the graph showing the diffusion of argon vs nitrogen, takes into account that the partial pressure difference for nitrogen is minimal (100% vs 79%) while for argon it is not (100% vs <1%). I'm not syaing it isn't, but there's no indication it is.
In my view, the real and existing benefit of argon is that it is better at removing the air from the binoculars in the gas-flushing process.
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Mark
Leica 8x20; Vixen 8x42; Swift 8.5x44, 10x50 and 20x80; TS 7x50; Orion 15x63
WO Megrez II 80 FD + Baader 90° T2 Amici
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