Now that the how-things-work site has been closed and in spite of some people wishing to raise the standard, there are a number of questions about the physics of how things such as common machines and appliances work
Is there any consensus on a "how things work" tag?
ps Not really a dupe of What tag should we use to indicate "how does X work?" ? - I'm intending this for a "how does an air conditioner work" not a "how does gravity work" type question.