Lmst

Magic Squares for the ZX81

In this session, Alex Arthur (@JamesA) shared an odd fountain they found whilst travelling that is both mathsy and artsy. @Tony_Mann showed us a magic square, which is interesting whichever way you look at it: https://www.markfarrar.co.uk/chris-wardles-reflections-magic-square.htm. We revisited (a kind of) slide rule with @gavan Fantom, who told us about Mechanical Flight Computers. We then heard from @pozorvlak about lathes, and cool shapes that can be produced using them (including a https://en.wikipedia.org/wiki/Hypotrochoid) Vanessa Madu talked about modelling an ocean and the commendable properties of rubber ducks for this: https://en.wikipedia.org/wiki/Friendly_Floatees_spill. Following this, Joey Marianer spoke on the Prisoner's Dilemma and intuition (see https://www.lesswrong.com/posts/HFyWNBnDNEDsDNLrZ/the-true-prisoner-s-dilemma for more info). @andrewt then spoke about a graphics trick used in old videogames to rotate sprites - just do three shears! #mathsjam #maths #fountain #strasbourg #magicsquares #sliderule #flightcomputer #modelling #rubberducks #ocean #prisonersdilemma #graphics #videogames #shears #imagerotation

#MagicSquares