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Comment Re:Perpetual motion machine of the first type (Score 1) 406

I don't follow - are you talking about the GR red/blueshift caused by the Earth's gravity? Over the length of the box? The claimed effect is tiny, but not that tiny.

From the description it seems like a very inefficient sort of vacuum tube - not "creating" x watts/s of power, but making use of x watts out of the 1000x watts fed into the thing (with the ratio being related to the redshift). I think actual vacuum tubes also work this way if you accelerate them enough.

Comment Re:Translation: (Score 1) 178

Music ... Between all the online streaming sources available, why? Eclectic tastes? Online Streaming has really opened up my sources considerably, something a stock library cannot do.

Photos? That's what my Camera is for. I don't take a lot of photos with my phone, because it is really inadequate compared to a real camera.

Videos? Same as Photos. My Camera does way better video than my phone. In the times I do need to snap a video, I live stream it in case I get arrested for video taping it .. and SD doesn't cut it for security.

Comment Re:Perpetual motion machine of the first type (Score 1) 406

A working EM drive has a massive power draw. It's only a source of energy while you feed power into it. In order to make a perpetual motion machine, you'd have to arrange it so that you were generating more power than you're putting in. Given the efficiency of this drive, that seems quite the far-fetched assumption.

Comment Re:Perpetual motion machine of the first type (Score 1) 406

You seem to be confusing the conservation of energy and of momentum. This drive seems not to conserve momentum (which, if this drive is not BS, then we know that really means there's some new physics here, that when understood restores conservation of momentum).

There's nothing about a drive like this that violates conservation of energy. As long as waste heat plus kinetic energy gained adds up to input energy (and no reason to think it doesn't), energy is conserved.

If it released energy out one side, that counts as reaction mass.

Photons, BTW, explicitly do not have mass. That's kind of the defining characteristic of particles that move at the speed of light. They have momentum even so. Relativistic energy is the sum of two terms: a mass term and a momentum term. The mass terms for a photon really is 0.

Comment Re:Prepare to be (Score 1) 406

technological progress is inevitable. It will never end!

This part is true, at least for the lifetime of the species. However, technological progress will be within the laws of physics, so we may not get everything we want.

This "EM drive", if real, changes nothing near-term because it's uselessly weak. However, it might relax the bounds of that "within the laws of physics" part. That's exciting, in a long term way, because it changes things from travel to nearby stars being effectively impossible, to being impractical with current technology.

Comment Re:Prepare to be (Score 1) 406

If it manages to violate conservation of momentum and that stands up to the inevitable scientific pig pile that follows, I'll be impressed.

Conservation of momentum is what makes most of the universe inaccessible to us in practical terms. If it is only a rule of thumb rather than an absolute law, then perhaps more of the universe is within our reach than soberly critical thinking people currently believe. Obviously not with this device, but at least in principle.

But I don't expect any results to survive the pile on. I hope they do, but what I hope and what I expect are two different things.

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