joshuarmstrong
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11:27:30 pm on February 24, 2009 |
title idea: 0.01 *C
(the * would be a degree symbol)reasoning: Triple point
The temperature and pressure at which solid, liquid, and gaseous water coexist in equilibrium is called the triple point of water. This point is used to define the units of temperature (the kelvin, the SI unit of thermodynamic temperature and, indirectly, the degree Celsius and even the degree Fahrenheit). As a consequence, water’s triple point temperature is a prescribed value rather than a measured quantity. The triple point is at a temperature of 273.16 K (0.01 °C) by convention, and at a pressure of 611.73 Pa. This pressure is quite low, about 1/166 of the normal sea level barometric pressure of 101,325 Pa. The atmospheric surface pressure on planet Mars is remarkably close to the triple point pressure, and the zero-elevation or “sea level” of Mars is defined by the height at which the atmospheric pressure corresponds to the triple point of water.
Like the idea that at that temperature water has the POTENTIAL to be in any state.
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