NATS 1945 Lecture Notes - Lecture 3: Hydrogen Sulfide, Superconductivity, Celsius
5 Oct 2016
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2. 2. 4 celsius scale: defined by assigning 0c to the freezing point of water and 100c to the boiling point. 2. 2. 5 absolute zero (-273c): a theoretical minimum temperature associated with zero vibrational ke. Defines the kelvin scale, where 0k = -273c (tc = tk - 273) Passes electricity through it but has zero electrical resistance, zero energy loss to heat. Expensive and must stay at extremely low temperatures. 2. 3. 1 heat: vibrational ke of molecules in transfer from one region to another, hot molecules to cold, until common temperature is reached. Molecules share their ke with everything they come in contact with until it is distributed evenly. Heat energy is flowing to cold molecules not the actual hot molecules (conduction) Vibrational ke is spread from one molecule to others through an expansion of their vibrations that come in contact with other molecules.
