The Laws of Thermodynamics in Plain English | Thermodynamics - Laws of Thermodynamics

📍 On Qwizo: Science › Science › Thermodynamics - Laws of Thermodynamics 📝 Take the quiz: https://qwizo.no/quiz/43 📖 Read the lecture: https://qwizo.no/lecture/2668 Why does hot coffee always cool and never reheat itself? The laws of thermodynamics: • Zeroth law: objects in thermal equilibrium with a third are in equilibrium with each other — the basis of thermometers. • First law: energy is conserved; it changes form but is never created or destroyed. • Second law: the entropy of an isolated system tends to increase, so heat flows spontaneously from hot to cold. No engine turns all its heat into work, and a fridge needs work to move heat from cold to hot. • Third law: as a system approaches absolute zero (0 K = −273.15 °C), its entropy approaches a minimum, and absolute zero can't be reached in a finite number of steps. 👉 Practice this on https://qwizo.no/ — free, no account needed. Chapters 0:00 Why coffee cools 0:11 Zeroth & first law 0:25 Second law 0:47 Third law Sources • BIPM — The International System of Units (SI Brochure), definition of the kelvin • OpenStax — University Physics Volume 2, chapters on the laws of thermodynamics About this channel: the narrator, Julian, is an AI-generated voice. He'll never pretend to be human. The scripts and facts are checked by the people behind Qwizo. #physics #thermodynamics #Qwizo