Bernard Rand @bernardrand.bsky.social · 25/02/2025We have a lovely class set of little ripple tanks that allow them to play around and observe wave behaviour 0121
Bernard Rand @bernardrand.bsky.social · 21/12/2024I like this one as a predict, observe and explain exercise to hammer home force on a current in a magnetic field and Fleming’s Left Hand Rule. 0131
Bernard Rand @bernardrand.bsky.social · 21/11/2024Here it is going in circles, with a bit of help! 051
Bernard Rand @bernardrand.bsky.social · 21/11/2024A couple of students in my enrichment group have made a nice linear motor. #iteachphysics #chatphysics 2202
Bernard Rand @bernardrand.bsky.social · 18/11/2024Kicking a concrete football. A nice question for getting students thinking about force and momentum carefully. 050
Bernard Rand @bernardrand.bsky.social · 16/11/2024Building little motors with batteries and neodymium magnets is great fun. 021
Bernard Rand @bernardrand.bsky.social · 16/11/2024The drinks can induction motor. One of my favourite demos, putting Faraday’s and Lenz’s laws together in a fairly complex situation. To get them really thinking hard you can ask why the current trip on the supply only goes once it spinning at a good rate? 6151
Bernard Rand @bernardrand.bsky.social · 12/11/2024200g mass (i.e. about 2N) at each end of the string. What tension does the Newton metre read in the middle? #chatphysics #itachphysics 450
Bernard Rand @bernardrand.bsky.social · 14/10/2024The answers to why the sky is blue and why are sunsets red are both illustrated well by this demo #chatohysics #iteachphysics 041
Bernard Rand @bernardrand.bsky.social · 13/10/2024This was posted by a physics teacher on another app. I don’t think they’re on here so I hope posting it isn’t seen as an attack on them. Can anyone spot my problem with the slide (and it’s not the Formby reference)? #chatphysics 830