Sound and fire = complicated!

The Rubens Tube is a really complicated demo that seems simple. Once you start thinking about it you realise that sound antinodes are points of oscillating pressure, so the flames shouldn't be stable peaks - they should be going up and down at the frequency of the wave! And if you change the gas pressure … Continue reading Sound and fire = complicated!

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Using antimatter to find weirdo supernovae

Fiona Panther is searching out galaxy for antimatter - no it's not science fiction, she's after anti - electrons, called positrons. It'll help her to study supernovae - exploding stars. https://youtu.be/qDCMuhTXo_Y Fi is a PhD student at ANU Research School of Astronomy and Astrophysics, Mt Stromlo. Filmed at Physics in the Pub, 2016, Smith's Alternative. … Continue reading Using antimatter to find weirdo supernovae

Gravitational Waves – behind the scenes

I had the honour to interview David Reitze, one of the leaders in gravitational wave physics, when he visited Canberra earlier this year. Bit surprised he wasn't one of the Nobel laureates... but anyway, ahead of the exciting announcement tomorrow, (what have they found this time?!),  here's the interview. https://youtu.be/AYcH-qtKxuo   And for those who … Continue reading Gravitational Waves – behind the scenes