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From: ward@hao.UUCP (Mike Ward)
Newsgroups: net.misc,net.physics
Subject: Re: perpetual motion
Message-ID: <1425@hao.UUCP>
Date: Fri, 29-Mar-85 00:01:14 EST
Article-I.D.: hao.1425
Posted: Fri Mar 29 00:01:14 1985
Date-Received: Sun, 31-Mar-85 03:43:47 EST
References: <608@vortex.UUCP>, <491@spp2.UUCP> <5336@utzoo.UUCP>
Organization: High Altitude Obs./NCAR, Boulder CO
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Xref: watmath net.misc:7708 net.physics:2352

> I saw a film somewhere (whose name I forget) about using hydrogen as
> a fuel. It seems that John Q. Public isn't ready for it -- street
> interviews showed that everybody thought of the Hindenburg.
> 
> They had a nice set of scenes where somone shot tanks of propane,
> something else, something else again, and hydrogen with a bullet from
> a rifle. The hydrogen was the only one that didn't go *BOOM*.

Carefully controlled demonstrations are not very persuasive.

The thing that makes hydrogen extremely dangerous is the huge
range of concentrations of mixtures with oxygen at which it is
explosive. (I hope that makes sense)

Then, too can you imagine the effect if thousands of cars were
pouring water vapor out their tailpipes on a hot, humid day?
-- 

Michael Ward, NCAR/SCD
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