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pippinsboss.bsky.social

Mathematician, tutor of A level maths, bridge player, father, grandfather and dog lover. Maker of mathematical videos, mostly at the level of A levels youtube.com/channel/UCnYszOhEIIdIMYyNx2yjwfg

332 posts 602 followers 244 following

Posts 14 Comments 36

There is something evocative (of what I'm not sure) about the light of a summer's evening. I guess it has to do with the prolonged twilight. This year, I noticed it for the first time this evening, walking home from the pub.

submitted 21 days ago • 0 comments

The new pope has a maths degree, and is clearly an intellectual heavyweight. I googled "mathematician pope", and it offered me Sylvester II who pontificated 999 to 1003. Fascinating guy, and like Leo, quite the intellectual. I wonder if Robert Prevost considered calling himself Sylvester V.

submitted 21 days ago • 1 comment

Pray tell me, Dr Fermi, how many flowers do you think there are on my wisteria.

submitted 36 days ago • 0 comments

This is fun.

submitted 44 days ago • 0 comments

Granddaughter has always loved rainbows. We made a rainbow-themed picnic for her 12th birthday. Note the black things at the end. They represent ultraviolet!

submitted 45 days ago • 0 comments

Our fritillaries are very happy by the pond.

submitted 54 days ago • 0 comments

#MathsToday #AlevelMaths Fruitful discussion prompted by two flawed questions. One says "... equilibrium ... find the coefficient of friction". It doesn't say limiting friction or anything to imply that, so actually we can only find a lower bound on μ.

submitted 56 days ago • 1 comment

There's another one: QEA, quod est absurdum, to be used at the of a proof by contradiction. Have you ever met that?

submitted 61 days ago • 0 comments

#MathsToday #ALevelMaths My student tackled an integration problem that ended up with a cubic to be solved. She has a new calcualtor, and hasn't yet worked out how to use it to solve cubics, so she used Newton-Raphson. Hurrah!

submitted 69 days ago • 1 comment

#MathsToday Newton-Raphson. I love it. I often complain about daft questions in the text book, but thus is great. Kepler's equation. Though it doesn't mention Kepler by name, it says "an astronmer" and "a planet" with eccentricity 0.1. That's Mars. It is often said that Kepler showed that. ..

submitted 70 days ago • 1 comment

#MathsToday Newton Raphson. I love it. I often complain about Qs in the text book, but this is brilliant. Kepler's equation. It talks about "an astronomer", and "a planet" with eccentricuty 0.1. That's Mars. It is often said the Kepler showed that the planets move in ellipctical orbits.