lecture34 - Thermodynamics I. Temperature 1. Thermal...

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Thermodynamics I. Temperature 1. Thermal equilibrium. Zeroth law of thermodynamics a) We need a thermometer b) Thermal equilibrium c) Zeroth law: If C is in thermal equilibrium with both A and B, then A and B are also in thermal equilibrium with each other d) Temperature Two systems are in thermal equilibrium if and only if they have the same temperature 2. Temperature scales T C : 0°C - freezing of water, 100°C - boiling of water T F = (9/5) T C +32 T C = (5/9) (T F - 32) T k = T C +273.15
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is a measure related to the average kinetic energy of its atoms as they move. In this animation, the size of helium atoms relative to their spacing is shown to scale under 1950 atmospheres of pressure. These room-temperature atoms have a certain, average speed (slowed down here two trillion fold). Heating a body, such as a segment of protein alpha helix, tends to cause its atoms to vibrate more, and to cause it to expand or change phase. http://en.wikipedia.org/wiki/Temperature
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lecture34 - Thermodynamics I. Temperature 1. Thermal...

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