Dictionaries are pretty solid authorities about what words mean, but they overextended themselves when reaching a bit in the definition for the word siphon. The Oxford English Dictionary and many others have erroneously claimed that atmospheric pressure makes siphons work for 99 years, so Dr. Stephen Hughes did some research to set them straight.
Dr. Hughes noticed that the OED misidentified atmospheric pressure as the thing that makes siphons work back in 2010. Really, it’s gravity that causes liquid to flow up the short side of a siphon and down the long side, but the original definition for a siphon read, Read more...
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The Dictionary Has Been Wrong About Siphons for 99 Years
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