Wrong, But Useful: Episode 76

Wrong, But Useful

In this episode of Wrong, But Useful, we’re joined by @dr_teeluck, who is Dr Vijay Teeluck in real life.

We discuss:

• sunrise (posts by @colinthemathmo and by me got the same answer, someone else disagrees, nice thing to explore)
• favourite numbers
• a lovely post by @samhartburn about tetrahedra fitting through each other
• bridges (why are the bricks not parallel with the road?)
• The R0 value of the coronavirus
• Internet once again astonished that multiplication commutes
• Perfect espresso formula
• In communicate the bloody thing properly news:
  • $|-1|-2|-3|$ thread here
  • “Ten times greater”
  • “Ten times smaller”
  • Zero point seventy-five per cent
• via @peterrowlett: 30 A*s in one class
• via @peterrowlett: Funding boost
• via @peterrowlett: call for hosts for Carnival of mathematics
• via @evelynjlamb: Google ngrams shows a dramatic spike for ‘enneagons’ (and other-gons) around 1820. Why?

Watch out for a special mini-episode next week!

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