Talk:Diving physics

Pressure-Temperature Gas Law - name?
We usually teach divers that there is a gas law which explains that the pressure inside a diving cylinder increases as the temperature increases. This leads to the advice not to put full cylinders near a source of heat or in direct sunlight - the fear being that the cylinder may overpressure with unpleasant consequences. In addition, this law explains why the pressure of a "hot-filled" cylinder may drop noticeably after it has cooled down.

However, I've never been convinced of a consensus on the name of the P-T gas law. I've seen it described as "Charles' Law" - which it certainly isn't (that's the V-T gas law); and often as Gay-Lussac's second law. However, G-L (in 1802) seems to have refined earlier work and formalised it (by declaring direct proportionality between volume and absolute temperature). The earliest expression of the law which says "pressure increases as temperature increases" seems to be ascribed to Guillaume Amontons who created a thermometer based on his discovery in 1695.

So, what's the best name for the P-T Law? I've used Amontons' Law in the article, but would like to see if others prefer an alternative. --RexxS (talk) 19:12, 8 July 2008 (UTC)

B-Class review
Not yet. Needs more refs, and if possible some images. OK now, Upgrading to B-class &bull; &bull; &bull; Peter (Southwood) (talk): 12:22, 13 December 2016 (UTC)

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