Time
First day back at school and having to get used to getting up in the dark again. Thankfully this doesn't last forever as the days get longer at an ever increasing rate so soon we'll be getting more sun...
Faradays Paradox
Yesterday I was writing some problems on electromagnetic induction so my students would have something to do when they get back after the holiday. There are a couple of classic HL situations, the wire...
Veritasium
The other day I was sent a link to this interesting website - Veritasium. There is some great stuff here. My students have done a lot of experiments with slinkies so I was particularly interested in the...
Excellent waves
Today I was preparing some material for my next workshop in Berlin and thought I'd play around with using excel for simulating physical phenomena. It's not my favourite tool but I managed to make this...
Kaluza Klein
I've just finished reading Johnny Dawes autobiography "Full of Myself". Johnny was a rock climber who did things a bit differently to the rest of the crowd, when everyone was into bolts and competition...
Keep your distance
Yesterday I had my bi-annual hair cut and was surprised by the amount of grey hair that landed in my lap. I had been under the impression that the amount of grey was actually getting less but when seen...
Paper 3 May 2011 tz2
I'm on holiday which means I've got time to work my way through the past exam papers that I've been hoping would solve themselves. I know that the mark schemes are available from the Ib and I'm not trying...
iPhone ripple tank
I've been a big fan of Paul Falstad's applets for a long time and particularly like his ripple tank. His home page has a picture of him with a small child (presumably his). The other day I was commenting...
Stocking filler
I hope my children don't read this blog because one of them is going to get this little car in their Christmas stocking. Well they aren't exactly children any more but they still like surprises. It's...
Flat screen detective
It's sad but true that the other night I was sat watching the blank screen on our flat screen LCD TV. What I noticed was that light reflected off the blank screen was being diffracted so took a photo...