Heat Engines: How to Convert Heat into Useful Work 🔥
A big idea 💭: The entire Industrial Revolution, all the machines, trains, and power plants, were built on one idea: “How can we convert heat into motion?” 🚂 In other words, how can we obtain useful work by burning something (coal, gasoline, gas)? The device that does this is called a heat engine
The Second Law of Thermodynamics and Refrigerators: Why Time Only Moves Forward ❄️
A philosophical-physical question 🤔: Why doesn’t a broken cup spontaneously reassemble itself? Why does ice melt in a hot drink, but water doesn’t spontaneously freeze? Why doesn’t a messy room tidy itself up?! 😅 All of these are tied to one of the deepest and most mysterious laws of all science
Solving Chapter 5 Problems: Thermodynamics — Step-by-Step 🔥
🎉 We’ve reached the final chapter of the book! Thermodynamics is the heart of modern engineering — from your car’s engine to your kitchen refrigerator, from power plants to airplane turbines. The problems in this chapter are a beautiful combination of the first law, P-V diagrams, cycles, and the efficiency of heat engines. Let’s take a step
Chapter 5 Memory Cards: Thermodynamics 🃏
A fun way to review the concepts of this chapter: you can either check the cards yourself, or play with a timer and score. The more you play, the higher your best score will be saved.