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KennyJ
Reged: 04/27/03
Posts: 10446
Loc: Lancashire UK
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I seem to recall a brief mention of this topic cropping up before on this board , but if so , cannot find it right now .
So at risk of asking one or two members to repeat themselves , does anyone have any comments or opinions on the following claims by Minox of Germany ?
http://www.minoxuk.co.uk/pdf%20files/Argon.pdf
Regards , Kenny
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If everyone is thinking the same thing , no-one is thinking - General George S.Patton
Zeiss 7 x 42 BGAT
Captain's Helmsman 7 x 50
Nikon 10 x 42 Superior E
Swift Audubon Kestrel 10 x 50
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Strathspey 20 x 90
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Mark9473
Carpal Tunnel
Reged: 07/21/05
Posts: 2781
Loc: 51°N 4°E
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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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refractory
Pooh-Bah
Reged: 02/05/05
Posts: 1051
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How does this stack up against Freddie V Jason, or Godzilla V Mechagodzilla?
Growing legumes inside the barrels would also remove the air- no need to flush (though the powers that be might feel the need for this post....).
Jess Tauber
Jess Tauber
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grbrown
professor emeritus
Reged: 07/09/05
Posts: 643
Loc: Ampthill, UK, 52:02N 0:30W
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I have read the link and by their own admission Argon is rare, whereas Nitrogen is with us in the atmosphere in substantial quantities, hence, presumably, easily extracted. 
Minox do not adequately explain the benefits of Argon to convince me that the use of it is worthwhile, or the effort and expense of producing it justified! 
In fact I am more likely to avoid them for being so wasteful in using a scarce resouce unnecessarily! 
Anyone had problems with Nitrogen-filled bins? 
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Graham
"one eye good, two eyes better...the more I look, the more I see"
BT100-45 degrees, plus 35,24,17,13,9mm Sieberts
15x80, 7x50 Steiners
12x50, 10x42, 8x20 Leica Trinovids
7x35 Minolta
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Joad
Wordsmith
Reged: 03/22/05
Posts: 12028
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Here's the thread you were thinking of, Kenny: Argon
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Mark9473
Carpal Tunnel
Reged: 07/21/05
Posts: 2781
Loc: 51°N 4°E
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Graham, the Earth atmosphere contains about 100,000,000,000,000 tons of Argon (give or take) - I'm sure Minox is not about to deplete it.
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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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KennyJ
Reged: 04/27/03
Posts: 10446
Loc: Lancashire UK
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Thanks Joad !
I knew it wasn't THAT long ago , relatively speaking :-)
Regards to you , Kenny
--------------------
If everyone is thinking the same thing , no-one is thinking - General George S.Patton
Zeiss 7 x 42 BGAT
Captain's Helmsman 7 x 50
Nikon 10 x 42 Superior E
Swift Audubon Kestrel 10 x 50
Helios 15 x 70 Observation
Strathspey 20 x 90
Televue 76 APO
Zeiss 85 Diascope
Helios 102 f5 refractor
Various eyepieces barlows tripods mounts etc.
Panasonic Lumix DMC - TZ5 digital camera
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Joad
Wordsmith
Reged: 03/22/05
Posts: 12028
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Regards back to you, K! And very sorry to hear about your Zeiss crash. Glad to hear that it still works, which is what counts. I'm obsessive about such matters, but I'm improving.
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Glassthrower
Vendor - Galactic Stone & Ironworks
Reged: 04/07/05
Posts: 15021
Loc: Kuiper Belt
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Quote:
very sorry to hear about your Zeiss crash
Huh? What did I miss? Did your Zeiss spotter take a tumble Kenny?
Clear dark skies...
MikeG
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Michael Gilmer - Member of the Meteoritical Society & Collector of Falling Stars.
Galactic Stone & Ironworks - Specializing in exotic and rare meteorite falls.
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Joad
Wordsmith
Reged: 03/22/05
Posts: 12028
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See "Skymaster Crash to the Ground" for the chilling tale of Kenny's Zeiss-to-Earth experience. But beware: it will make strong men weep, and make weak men buy Tasco!
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