Learn how to do (almost) anything at HowToDoThings! Explore instructive how-to articles and videos – make things, solve problems, be happy! How does rust work? Rust is the common name for iron oxide. Learn about corrosion and how metals rust. How does a spectrometer work? Many people know how a telescope works, but relatively few have much experience with the innards of a spectrometer. A carburetor regulates the flow of air and gasoline into the engine cylinders. Learn about carburetors and find out how a carburetor works. A thermometer is a device that measures the temperature of things. The name is made up of two smaller words: Thermo means heat and meter means to measure. A how-to is an informal, often short, description of how to accomplish a specific task. A how-to is usually meant to help non-experts, may leave out details that are. HowStuffWorks explains thousands of topics, from engines to lock-picking to ESP, with video and illustrations so you can learn how everything works. This page is about how energy things work and focuses on How Does a Refrigerator Work? How do caucuses work? 2. The Iowa Caucus. 3. Lots More Information. More To Explore. More Great Links. Top 5 Ways to Get Smarter. The Ultimate Kissing Quiz. How do cats purr? Check out this article on Animal Planet to learn how cats make that special purring sound.