A student has cut a piece of paper in half then taped the ends together with a twist, forming a Mobius band that has only one side but as much area as both sides of a piece of paper. There are various Electrodynamics formulas and results written all over the sheet.

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Robert McNees (mcnees@mastodon.social)'s status on Monday, 12-Dec-2022 15:48:37 UTC Robert McNees

The students in my upper-level electrodynamics course are taking their final exam right now, which always reminds me of the time I told my students they could bring a formula sheet to the final exam as long as it was on one side of a piece of paper.

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