Wine Glass Smash

Discuss your favorite close-up tricks and methods.

Postby Guest » 04/25/03 12:01 PM

Hi Folks

I'm not entirely sure that this is the correct sub-section for this post - but I think 'Close Up' is probably it.

I was just wondering where I can find the workings of the effect that David Blaine had in one of his TV specials (perhaps the Vertigo special) in which a wine-glass smashes?

I suspect a similar effect could be achieved through resonance - but it seems unlikely.

Incidentally, several years ago while we were enjoying our Christmas dinner, a wine-glass that was sitting on the table spontaneously smashed. No-one was remotely near it. I don't believe there were any 'psychic' phenomena involved (who would!) - and suspect either some form of fatigue or resonance effect. Perhaps there's a material scientist (or anyone) that might provide an explanation?

Cheers

D
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Postby Pete Biro » 04/25/03 05:06 PM

You could use an off-stage assistant with a rifle. :D

Or, as we did, we had a table with a spring loaded hammer that came up, hit glass and went back into the table at the other side.
:)
Stay tooned.
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Postby Guest » 04/25/03 06:06 PM

Are there really people that can do this with their singing voice?
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Postby Terry » 04/26/03 05:53 AM

Are there really people that can do this with their singing voice?

I've heard of people who sang sooo badly that animals went sterile :D
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Postby Ian Kendall » 04/26/03 07:18 AM

A few years ago there was a clip on Tomorrow's World (a popular science show in the UK) where an Opera singer listened to the resonant note of a wine glass as it was 'pinged' and then sang the same note for a while and the glass smashed.

Many years later we did the same effect in the Science Festival, but we had to use a tone generator and a lagged box. I mentioned to the others the clip I had seen and the concensus was that they faked it :(

Theoretically all you would need is a loud note at the right pitch for a long time, so I still believe the woman did it for real.

Take care, Ian
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Postby Bill Mullins » 04/26/03 11:42 AM

Is there some way you could pre-stress the glass, like Rupert's Pearls or tempered car window glass?
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Postby Ian Kendall » 04/26/03 02:49 PM

If you brought any flaw into the glass it would affect the resonance, and the effect would be compromised.

Ian
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Postby magicpirate82 » 04/27/03 11:47 AM

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Postby magicpirate82 » 04/27/03 11:52 AM

Please disregard the above. I had just read the other and as I was reading this thread....got a bit a head of myself and confused. Apologies!

:help:
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