http://forums.randi.org/showthread.p...70#post9472670
In the linked post, I do a bit of back-of-the-envelope thinking about this question asked by a fellow who doesn't think rockets can work in space:
None of us can figure out what he actually means by that "Challenge", but his question about the gun is actually kind of interesting.
So, physics people! Tell me, under what conditions would the gun reload?
Off to bed now, looking forward to some massive arguments when I check back tomorrow! :D
In the linked post, I do a bit of back-of-the-envelope thinking about this question asked by a fellow who doesn't think rockets can work in space:
Quote:
Hypothetical question! Consider a handgun that is somehow floating in mid-air. Now imagine that same gun can be fired by remote control. The gun isn't being held, the trigger is not pulled, the ignition happens electronically. The gun has been cocked before being set adrift then fired remotely. Will the gun reload? Remember nobody is holding it! Challenge: If one of the vacuum rocket guys can build a working model of the rocket that pushes against itself I will build one of the other type that uses propellant and gases that pushes against the earth and atmosphere |
None of us can figure out what he actually means by that "Challenge", but his question about the gun is actually kind of interesting.
So, physics people! Tell me, under what conditions would the gun reload?
Off to bed now, looking forward to some massive arguments when I check back tomorrow! :D
via JREF Forum http://forums.randi.org/showthread.php?t=264825&goto=newpost
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