Date: Sun, 15 Aug 2010 00:09:30

Author: Urs Lauterburg

Subject: Re: new demonstrations, light bulbs



Very nice videos indeed. Thank's for sharing. I specially like the
effect of the burning filament in hydrogen. That really is
astonishing. However, I wonder about how big the danger of self
ignition is in this case. Probably zero if you are careful to have
only hydrogen and no air or oxygene inside the cond@om.

Has it ever blown up besides purposely igniting it with the torch?

Great effect to light up that little ''hydrogen bomb''.



Urs Lauterburg
Physics demonstrator
Physikalisches Institut
University of Bern

>Greetings all,
>in response to Doug Johnson's request for demo ideas I have posted
>videos of a couple of fairly new light bulb demos on youtube.
>They are of a liquid nitrogen light bulb, inspired by Michael
>Vollmer and Klaus Peter Mollmann, from Brandenburg University. That
>video is at
>and a hydrogen filled condom light bulb, inspired by Bruce Yeany,
>from Annville Cleona Junior Senior High School. That video is at
>or you can just go to daiwilley's channel to find them.
>I hope these are of use to you, I had fun making them,