Sound
SciCast film goes here
If you're reading this text, try visiting http://scicast.org.uk/films/2009/01/sound.html directly. If you're already there you probably need to update Flash
Sound
Duke and Dave
Download film (right-click)Demonstration , Explanation , Physics , Secondary
A film in two parts: first, explaining the Doppler effect, and second, looking at the resonance of glasses, explaining why the pitch shifts with different levels of liquid in the glass….
Director's Notes:
A film in two parts: first, explaining the Doppler effect, and second, looking at the resonance of glasses, explaining why the pitch shifts with different levels of liquid in the glass.
SciCast Notes:
I’m not normally a fan of ‘I’m stupid/I’m clever’ double-acts, but it works well here. The big grins and nobody taking it remotely seriously help.
Meanwhile, it’s a shame we struggle to hear what’s being said near the road — mobile phone video camera, I think? — as it’s both written and performed well. The pratfall at the end of that sequence is terrific too, they’re surprisingly hard to do this well, though it’s a pity we only really see the performer’s feet.
The second part of the film makes a valiant attempt to explain something that’s surprisingly complex — how the pitch of a resonating wineglass changes with the amount of liquid it contains. Great script, here.
So: for all its technical limitations, this is a very carefully put-together film. It’s well written, well considered, and well shot — the only weakness, really, is the camera.
— Jonathan