Date: Wed Dec 19 15:57:01 2007

Author: Urs Lauterburg

Subject: Re: High-Speed video of quarter lift


What's the type of camera you used for this? Is
it one of the kind we discussed recently here in
the thread about high speed video cameras? I will
put one on my wish list for the next year.

I agree with Rick about the sound.. The original
one of the Who on their Album ''Tommy'', the
first rock opera, is the real thing and not the
Comedian Harmonist's version.

Just my one Swiss Frank worth of a comment


Urs Lauterburg
Physics demonstrator
Physikalisches Institut
University of Bern

>Good Day,
>I'm having great fun with my high-speed video camera.
>This is the demonstration where you blow across
>top of a quarter and cause it to lift up off a
>tabletop and fling itself into a cup. And, just
>to get people talking, I've titled the youtube
>release "Bernoulli's Principle". If you watch
>this frame-by-frame you can see that the quarter
>lifts straight up about 1/8" and then tips
>forward then backward before getting caught up
>in the air stream.
>It's a really startling demo to see in person.
>Just amazing in slow motion. Captured at 500
>frames per second. Played back at 30 fps.
>Except for the third run through where it's
>played back slower. (I don't know how slow,
>it's just iMovie.)