Search found 1131 matches

by 93143
Thu Feb 14, 2013 9:35 am
Forum: News
Topic: Mach Effect progress
Replies: 2668
Views: 796416

Re: Mach Effect progress

Re: lightcone - the speed of light is the same in all frames, and relativistic foreshortening is symmetric (and small). I don't see a mechanism there, though as I said I'm not an expert on relativity...
by 93143
Wed Feb 13, 2013 10:40 pm
Forum: News
Topic: Mach Effect progress
Replies: 2668
Views: 796416

Re: Mach Effect progress

I wasn't all that impressed by chrismb's M-E thruster vs. rest of universe scenario. I thought it was intuitively obvious - it's certainly the first thing that occured to me ... The thing is, I had the impression that these devices were supposed to have velocity- and orientation-independent behaviou...
by 93143
Wed Feb 13, 2013 9:25 pm
Forum: News
Topic: Mach Effect progress
Replies: 2668
Views: 796416

Re: Mach Effect progress

It is, though. The power exerted by a rocket engine does not depend on its velocity or acceleration. Propellant flow and thermal efficiency are basically constant. Heat of combustion is constant. Thrust is basically constant. That constrains the problem. Or take an electric thruster. Power input, pr...
by 93143
Wed Feb 13, 2013 8:59 pm
Forum: News
Topic: Mach Effect progress
Replies: 2668
Views: 796416

Re: Mach Effect progress

When I appeal to myself as an authority, I am speaking specifically of the question of energy accounting in a rocket engine. I make no claims to understand exactly how a Mach-effect thruster is supposed to work. But I do know how a rocket engine works, and in that context you are the one talking gib...
by 93143
Wed Feb 13, 2013 12:48 am
Forum: News
Topic: Mach Effect progress
Replies: 2668
Views: 796416

Re: Mach Effect progress

That seems to me a long winded reply. The thrust efficiency of any thruster is a figure of merit that exists for all thrusters. For a chemical thruster, it is the thrust over the energy from the reaction products burned over time. It is for stationary thrust only. Taking this figure of merit and pr...
by 93143
Sun Jan 13, 2013 9:15 pm
Forum: News
Topic: Mach Effect progress
Replies: 2668
Views: 796416

No, he's not. Look at his latest post, for example, where he ignores the obvious interpretation of slightly clunky grammar in favour of a rather pointless attempt to accuse GIThruster of a logical fallacy. He is not innocent in this. What interpretation can be put on GIT last post, then? Either it ...
by 93143
Sat Jan 12, 2013 8:03 am
Forum: News
Topic: Mach Effect progress
Replies: 2668
Views: 796416

Betruger wrote:All Chris is doing is reasoning.
No, he's not. Look at his latest post, for example, where he ignores the obvious interpretation of slightly clunky grammar in favour of a rather pointless attempt to accuse GIThruster of a logical fallacy. He is not innocent in this.
by 93143
Mon Jan 07, 2013 10:55 pm
Forum: General
Topic: Democrats Start Positioning Themselves For Prohibition End
Replies: 127
Views: 11149

But watch the the Tyson interview to get the entire story. http://www.youtube.com/watch?v=HooeZrC76s0 I agree 100% with basically everything Tyson said in that video. Unfortunately your quote cuts out the very important first half of his sentence: " If that's how you want to invoke your evidence fo...
by 93143
Wed Jan 02, 2013 7:49 am
Forum: General
Topic: Democrats Start Positioning Themselves For Prohibition End
Replies: 127
Views: 11149

it is possible to say god is shrinking because scientific knowledge is growing. Not without implicitly endorsing a fundamental misunderstanding of the philosophical role of God. It seems ( cf. Kurt Gödel) to be a mathematical fact that science can never be 'complete' in the sense of a fully self-ex...
by 93143
Thu Dec 27, 2012 12:27 am
Forum: News
Topic: Mach Effect progress
Replies: 2668
Views: 796416

Chris, those aren't ad hominem. They're insults accompanying the argument, rather than being used as part of the argument.
by 93143
Wed Dec 26, 2012 9:59 pm
Forum: News
Topic: Mach Effect progress
Replies: 2668
Views: 796416

Neither Woodward nor March would agree that others can only make unsuccessful attempts at repeating their work unless they were contacted. Did you even read GIThruster's response? What basically happened is that the guy doing the replication attempt threw together an experiment that couldn't have w...
by 93143
Tue Dec 25, 2012 10:02 pm
Forum: News
Topic: Mach Effect progress
Replies: 2668
Views: 796416

You know perfectly well that there were numerous attempts at building a flying machine before the Wright brothers came up with the key to actually making one work. All of them failed for reasons that had not been obvious to the experimenters. Mach effect is not known to be real. But if it is, it has...
by 93143
Tue Dec 25, 2012 9:51 pm
Forum: News
Topic: Mach Effect progress
Replies: 2668
Views: 796416

This is a completely hypothetical example, which you seem to be unable to resist trying to twist to fit your own slant. The point is that (assuming Woodward is correct) it is not straightforward to generate a measurable Mach effect in the lab, and someone who fails to educate himself on the pitfalls...
by 93143
Tue Dec 25, 2012 9:48 pm
Forum: News
Topic: Mach Effect progress
Replies: 2668
Views: 796416

Is anyone doing a DIY replication? there was a replication attempt about 10 years ago, but that person did not contact Jim for guidance If one has not been blessed by being invested with the gifts of knowledge of the high priests of ME, then it would seem that one stands little chance to be able to...
by 93143
Thu Dec 20, 2012 1:46 am
Forum: News
Topic: Mach Effect progress
Replies: 2668
Views: 796416

1.7*60% =1.02g. Not how that works. Volume scales inversely with mean density. 5/0.6 = 8.333 Then redo the calculation: 5/cbrt(8.333)^2 = 1.216 You've still got 20% extra surface gravity. ... Another issue is that things happen faster at higher gee. Human reflexes are generally fast enough to deal ...