Unit 6
Heat and temperature.
What temperature measures: jiggling particles, conduction, specific heat, convection, radiation and engines.
Before this unit
The unit, lesson by lesson
Lessons
3 lessons · 18 practice questions · about an hour
Heat and temperature
What temperature measures and what heat is: particles that jiggle, kelvin and degrees, conduction along a bar of copper and of wood, why metal feels cold, specific heat, convection and radiation.
Entropy and heat engines
A Stirling engine between a flame and cooling water: why it needs two sides at different temperatures, the books of heat in, work and heat out, entropy and the second law, and the Carnot limit no engine can pass.
Brownian motion and random walks
A speck that never rests in still water: what pushes it, why a big speck wanders less, why in a random walk getting twice as far takes four times as long, and Einstein's formula that proved molecules exist.