swansont

There’s no physics here. This doesn’t meet the expectations we have of speculations. We need a model, evidence. I don’t see any of that.

My own field is like that. Bill Phillips, who shared the 1997 Nobel for laser cooling trapping, loves to point out how that techniques is used in atomic clocks, and his funding from the Office of Naval Research has paid great dividends (in both technology, and training of scientists to engage in further innovation) A lot of relatively inexpensive table-top physics is out there.

You haven’t clarified anything. Does anything leave the device, in this water analogy? Usually water is thought of as being outside of the craft

It comes from statistical mechanics “Statistical mechanics postulates that, in equilibrium, each microstate that the system might be in is equally likely to occur, and when this assumption is made, it leads directly to the conclusion that the second law must hold in a statistical sense. That is, the second law will hold on average, with a statistical variation on the order of 1/√N where N is the number of particles in the system. For everyday (macroscopic) situations, the probability that the second law will be violated is practically zero. However, for systems with a small number of particles, thermodynamic parameters, including the entropy, may show significant statistical deviations from that predicted by the second law. Classical thermodynamic theory does not deal with these statistical variations.” https://en.wikipedia.org/wiki/Second_law_of_thermodynamics#Statistical_mechanics

Where did that quote cone from? Where did that diagram come from? High speed with respect to what? What is the “convergence of the quantum vacuum“? What is the mathematical expression for “convergence of space”?

Which we do... Which there was.

Hydrogen is a storage medium, like a battery. It’s not an energy source, like oil and natural gas, which represent stored energy. For a “hydrogen economy” to succeed you need efficient generation, storage, and release of the hydrogen. Plus a source if energy to create the hydrogen. Who is shouting this?

The water is the propellant, if it leaves the device. If it doesn’t, then you’re limited in how far you can move. The CoM stays put.

What’s the distinction here? What has momentum going in the opposite direction?

NASA and CERN are not representative of science in general

Depends on the probe. Equipment often doesn’t like large acceleration, either, but it’s often more tolerant

Or, maybe we don’t compare police and the military - especially the highly-specialized, elite forces within the military. We do NOT expect a given police officer to manage violent confrontations on a daily basis. Over the scope of all police, a few will be faced with a violent situation on a given day, but there are ~800,000 police officers in almost 18,000 departments. Special forces in the military are less than 1/10 of that number. It’s unreasonable to expect to train that many people, especially absent the selection criteria we have for special forces that the police lack. If you want these to be closer to analogous, you need to select a subset of police for this training.

That’s not reactionless, if there’s a bucket of water involved. There’s a mass flow rate which relates to the thrust. In a vacuum you lose this analogy. Plus, it has nothing to do with gravitational waves

Neutrons do not travel at c; they are not EM radiation Where is the non-spherical component? If each one will not radiate, you’re just doing 0 + 0

Either one can be the moving frame. In either frame, you can consider the observer to be at rest.

It’s not like there has been good confirmation, and it depends on RF, so in addition to gravitational waves being way, way too weak, it’s also not the right interaction. Spherical symmetry isn’t conducive to gravitational waves.

What experiment confirms that the platform observer is still, and the train observer is moving?

None of their clocks will agree, if there is relative motion. (you don’t specify if O is in a third frame) edit: As Strange said, they will agree on anything reconstructed with the Lorentz transform, but that’s not what “agreeing on the timing” means to me

Is this accurate? Are non-supervisory police on salary, or are they wage employees, who make a lot of their money on overtime (time and a half)? Not sure it’s fair to say we “expect” them to work long hours. Also, on the list of dangerous jobs, there are only a couple that pay much more than policeman (on average). Most pay significantly less https://www.monster.com/career-advice/article/high-paying-dangerous-jobs

I wasn’t aware they claimed their drive derived thrust from gravitational waves.

Numbers or none of this matters.

Do you mean why the halo is there, away from the LED? Light of different wavelengths behaves slightly differently, so you get chromatic aberration Chromatic aberration occurs because the lens refracts the various colors present in white light at different angles according to their wavelengths. Red light, for example, is not refracted at the same angle as green or blue light so the focal point on the optical axis of the lens is farther away from the lens for red light. Likewise, green light is focused closer to the lens than red light and blue light is focused in a plane that is closest to the lens. This phenomenon is commonly referred to as dispersion and occurs to a certain degree in all spherically shaped lens elements. The inability of the lens to bring all of the colors into a common focal plane results in a slightly different image size and focal point for each of the three predominant wavelength groups. The result is a colored fringe or halo surrounding the image, with the halo color changing as the focal point of the objective is varied. https://escooptics.com/blogs/news/84510147-chromatic-aberration-in-spherical-lenses And your eyes may have some imperfections (natural/expected, and also some caused by disease) that exacerbate this.

The effect is likely from the optics (eye or camera), so I doubt they can be used for navigation. Unlike the position of the light itself, the other optical effects will not necessarily have a fixed position or orientation.

Whether it can be photographed is easily checked by taking a photo. Are you talking about this?

I think the US police problem is also linked to our incarceration problem, another difference between the US and Europe. (which may be in that video, which I can't watch ATM)