Fantasy & Science Fiction
Isaac Asimov had a 30 years correspondence with Nobel Prize winner Linus Pauling. Pauling read Isaac's science articles in Fantasy & Science Fiction magazine regularly and wrote Isaac whenever he found an error. Here is an interesting excerpt.
From Pauling to Isaac:
I am writing now about your article in the September 1978 issue. On page 123, you say that Amontons and Guy-Lusac observed that if a gas at the freezing point of water, 0 degree Celcius, is decreased in temperature to -1 degree Celcius, then both the volume and the pressure of the gas will decline by 1/274 of the temperature. This is wrong. What you should have said is that _ _ _ I hope you are keeping busy as ever.
What was the explaination?
From Pauling to Isaac:
I am writing now about your article in the September 1978 issue. On page 123, you say that Amontons and Guy-Lusac observed that if a gas at the freezing point of water, 0 degree Celcius, is decreased in temperature to -1 degree Celcius, then both the volume and the pressure of the gas will decline by 1/274 of the temperature. This is wrong. What you should have said is that _ _ _ I hope you are keeping busy as ever.
What was the explaination?
Labels: friday special, funphysics, thinktank
posted by Rajesh Lal at
10:45 PM
7 Comments:
I think he explained
Pressure * Volume
----------------------------- = static Value
Absolute Temperature
The gas constant (also known as the molar, universal, or ideal gas constant, usually denoted by symbol R) is a physical constant which is featured in a large number of fundamental equations in the physical sciences, such as the ideal gas law and the Nernst equation. It is equivalent to the Boltzmann constant, but expressed in units of energy (i.e. the pressure-volume product) per kelvin per mole (rather than energy per kelvin per particle).
Its value is:
R = 8.314472(15) J · K-1 · mol-1
The two digits in parentheses are the uncertainty (standard deviation) in the last two digits of the value.
The gas constant occurs in the simplest equation of state, the ideal gas law, as follows:
where:
is the absolute pressure
is absolute temperature
is the volume the gas occupies
is the amount of gas (the number of gas molecules, usually in moles)
is the molar volume
The gas constant has the same units as specific entropy.
Contents [hide]
1 Relationship with the Boltzmann constant
2 Specific gas constant
3 US Standard Atmosphere
4 See also
5 References
6 External links
Good job! On copying some of a Wikipedia page, without even remouving the Contents section.
lol...
Gas is a stage of water (a.k.a. the water cycle). Gas is water that evaporates at 212 degrees Fahrenheit. Therefore... the freezing point of water is 32 degrees Fahrenheit or 0 degrees Celsius, so the gas would have frozen instead of dropping volume and mass.
maybe its as simple and small as the fact that the temperature is is -1 and it declining by 1/247 of tha ttemperature would be it declining by a negative which would then be a positive
1) I thought it was 273, rather than 274. Physics experts pls speak up...?
2) "Anon July 4" further presented a typo and called it 247, which made it more confusing?
3) Correct statement should have been:
"... both volume and pressure will decline by 1/273 of that gas property at 0 deg C."
Note 1: At 0 deg C, the Absolute Temp is 0 + 273 = 273 deg A.
Note 2: At -1 deg C, the Absolute Temp is (0 + 273) - 1 = 272 deg A.
Shark
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