41–50 of 88 posts
Why not run the setup without the cavity, or replace the magnetron with a big ass resistor, and see if you still get deflection. I suspect this is the beginning of a refutation, but it feels like there's a carrot still dangling.
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That's sort of an unnecessary dichotomy. Enthusiasm doesn't mean hoax, and the mistake was propagated by more than just the inventors. Everything suggests that it was just science in action. There was an experiment, and it failed to reject the null hypothesis of 'no thrust'. A few groups have repeated the experiment, but not to the experimental power needed to thoroughly reject it. This test seems to be a more defini…
I can see that to a point, but there was a commercial venture set up around it too.
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That's sort of an unnecessary dichotomy. Enthusiasm doesn't mean hoax, and the mistake was propagated by more than just the inventors. Everything suggests that it was just science in action. There was an experiment, and it failed to reject the null hypothesis of 'no thrust'. A few groups have repeated the experiment, but not to the experimental power needed to thoroughly reject it. This test seems to be a more defini…
I can see that to a point, but there was a commercial venture set up around it too.
Let a few more rounds of experimentation and refutation go through, and if it's clear it can't work at all, and they stay in business without pivoting, then we can breeze right past hoax and jump to fraud. Time will tell about it, I guess.
I think the best sentence is this: "The theoretical expectation is that you don't measure anything. Now you're measuring something, and you can learn extremely much on this hunt for the error."
Sounds a bit like Fermi's quote: "If the result confirms the hypothesis, then you've made a measurement. If the result is contrary to the hypothesis, then you've made a discovery."
Taking the EMDrive as an example -- we have measurements that contradict current theory, so we are either going to discover new physics or we are going to learn something about the art of making very precise measurements of force in complex mechanical systems. In no case do we learn nothing.
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If it's free energy or free momentum, using only physics that has been perfectly described in hundreds of millions of contexts and experiments, for one and a half centuries, using mathematics that don't allow for either, you can rule out this alternative. The likelihood that free momentum and free energy are possible is indistinguishable from 0. They are empirically impossible in the strongest reasonable sense the wo…
I feel like you're suggesting that the universe springs forth from scientific theory and not the other way around.
So was it a hoax or a mistake by its inventors?
I'd go more with mistake. Properly measuring things can be hard.
I think, if nothing else, this is the take-away from the entire EM-drive analysis. I like it because it applies to many things, including software.
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Holy mackeral, that is cool. I really appreciate the "well, let's just try it" approach. I can't wait to see what happens when he launches his little satellite. If it shows positive results, lots of people will replicate it. This is win-win: if it works awesome happens. If it fails then you're left with the experience of having built a little satellite!
> I really appreciate the "well, let's just try it" approach. That's called "science." :)
https://translate.google.com/translate?hl=en&ie=UTF8&prev=_t... The critical passages - translated by myself Page 2: The hint: "Again it showed the same behavior - until the drive was directed towards the top for testing purposes. Usually, the drive is put on a torsion balance in a way that it can best turn the scale left or right. With the drive directed towards the top nothing should be measurable. [...] However, t…
So... you're saying all we need to do is pull an extension cord behind our spacecraft? Unlimited powahhh!
In case you are curious about some data. There is a German maker who has been posting about his experiments as well. https://hackaday.io/project/10166-flying-an-emdrive