#johnnapier — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #johnnapier, aggregated by home.social.
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The number e is a #mathematicalConstant approximately equal to 2.71828 that is the #base of the #naturalLogarithm and #exponentialFunction. It is sometimes called Euler's number, after the Swiss mathematician #LeonhardEuler, though this can invite confusion with #EulerNumbers, or with #EulersConstant, a different constant typically denoted γ {\displaystyle \gamma } . Alternatively, e can be called Napier's constant after #JohnNapier.
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Here are a few #horsetail plants, seen on my walk #today (yesterday, actually).
Plus a wandering "woolly bear" (#TigerMoth) #caterpillar.
Horsetails are 150 million-year-old living fossils that were eaten by - yes! - Jurassic #dinosaurs.
Also, their unique node spacing inspired #JohnNapier in 1614 to invent #logarithms.
Admittedly, some rude US jurisdictions (wtf Oregon...?) classify them as noxious weeds.
But imho this is an amazing plant with a wonderful résumé 💚