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How Do Disposable Hand Warmers Work?
Published 3 years, 4 months ago
Description
These tiny packets are able to give off a lot of heat for a few hours thanks to the same process that causes rust to form -- just sped way up. Learn more in this episode of BrainStuff, based on this article: https://science.howstuffworks.com/disposable-hand-warmers.htm
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