Re: Here's one for Bob (hope it makes your head spin)

In article <2t%Di.304$hP1.4@xxxxxxxxxxxx>, Ron Johnson <ron.l.johnson@xxxxxxx> writes:
On 09/06/07 12:57, Bill Gunshannon wrote:
In article <fbpdrb$oa0$1@xxxxxxxxxxxxxxxxx>,
david20@xxxxxxxxxxxxxxxx writes:
A lot of science fiction ideas may well be feasible but the method by which
they are accomplished will in the majority of cases be far different from that
envisaged by the scifi author. We went to the moon but we didn't use a cannon
like Jules Verne (though in other respects Verne was fairly accurate).

There are some who would disagree with your idea regarding wether or not
we used a cannon. Have you ever seen the quote from Chuck Yeager about
why he turned down the opportunity to be one of the first astronauts?

No.

But a cannon and a rocket are polar opposites. One uses fluid
dynamics and the other Newton's 3rd Law.

A cannon and a rocket are identical. Both use Newton's 3rt law.
It's just that the one uses a somewhat larger reaction mass than
the other.
.

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