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US education (lemmy.ml)
submitted 6 days ago* (last edited 6 days ago) by Zerush@lemmy.ml to c/science_memes@mander.xyz
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[-] Tar_alcaran@sh.itjust.works 22 points 6 days ago

Given it has a (good quality) color photo attached to it, it was definitely published when we already understood the theory of electricity really well, so it doesn't get a pass.

It's even worse than that. Electric lighting predates the photo camera by several decades

[-] bigfondue@lemmy.world 10 points 6 days ago* (last edited 6 days ago)

Faraday's law and Lenz's law were discovered in the 1830s

[-] Tar_alcaran@sh.itjust.works 3 points 6 days ago

The first arclamp is from the 1800-1810s. They weren't exactly selling them in stores by then, but they had been invented.

[-] balsoft@lemmy.ml 2 points 6 days ago

I'd argue we didn't fully understand the theory of electricity until we understood the atomic structures of metals and semiconductors, and that was properly developed in the early 20th century.

[-] Tar_alcaran@sh.itjust.works 3 points 6 days ago

You could place "understanding" at many points in history, and several in the future:

Building an arclamp powered by a portable generator is damned impressive.

Sending a message via electromagnetic waves shows very impressive understanding of electricity too.

Having a small electromagnetic particle accelerator in your house to show moving pictures is pretty damned amazing.

Using electricity and basically sand to do maths is insanely impressive.

On the other hand, you might argue we don't understand electricity because we don't have a unified field theory.

this post was submitted on 29 Jul 2025
1203 points (97.3% liked)

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