swansont

Technically, no. But it would give an acceleration indistiguishable from gravity. You'd have "I can't believe it's not gravity!"

I didn't mean to imply that the experiment precluded sci-fi time travel. I was just clarifying that clocks ticking at different rates in the experiment was not an example of sci-fi time travel. Nothing in the experiment travelled backward in time. Put another way, sci-fi time travel always boils down to how do you get around the causality problem. There was nothing acausal in the H-K experiment.

An object moving has energy, but isn't necessarily using energy.

A plasma is basically a gas of charged particles. Once the temperature is high enough, there is enough thermal energy to ionize atoms and keep them from recombining. The behavior of such a collection of particles would be distinct from the other more common phases of matter.

Or recombination.

Any of them. If you can switch off an antigravity device, it is conceivable you could make a perpetual motion machine: Turn the machine on. Raise a mass. Turn the machine off. Let the mass fall and do work (e.g. turn a turbine) If it took less energy to raise the mass than the work you extracted, you have perpetual motion. So if such a device exists, it must consume at least as much energy as you save in lifting the mass. It can't be a static device that can be used to e.g. shield half of a ferris wheel, because that's perpetual motion, too. Once you start being able to create energy you coud also decrease entropy, so it really doesn't matter which laws of thermo you discuss; you'd be violating them.

The observers would see light at c, but of different frequencies. They would never measure another observer's speed as exceeding c; once you start moving fast you find that speeds don't add linearly (we just don't see it at small speeds). Your two observers would see each other moving at about 0.88c. See here

Most, if not all, of the standard moon hoax objections are addressed here

Which is why saying that "X has written N books on the topic of Y" gives a false sense of authority and expertise about X. Anybody, in principle, can write a book.

The H-K experiment? Planes with a cesium clocks travelled westward and eastward for a number of hours, and a clock stayed on the ground. From the point of view of an inertial observer (not on the earth), the plane that moved west was travelling the slowest, and its clock sped up relative to the ground-based clock. The eastbound clock was going fastest, and it slowed down relative to the ground-based clock. There was also a change in the gravitational redshift, because the planes flew at some altitude, and clock rates depend on your gravitational potential too. The overall effect was consistent with the predictions made by relativity.

Gammas are photons released in nuclear reactions. The bulk of the energy released in fission is in the kinetic energy of the fission products. Some energy will be released later on in the decay of the fisiion products, which tend to be beta decays. A small fraction of the energy released is in the gammas and neutrons. There really aren't an appreciable number of alpha particles involved in the reactions.

For a dryer. But the discussion is about washing machines, so the spin axis is perpendicular to the surface of the earth. Gravity is irrelevant to the discussion.

According to Dirac theory electrons are point particles, and all of the physical evidence is consistent with that.

Note that magnetic forces do no work (the force is perpendicular to velocity), and so cannot be directly used to change the kinetic energy of an object. If you want to use antigravity, you'll have to discover it first. And it had better not violate the laws of thermodynamics! (i.e. you can't turn it on and off)

Also the Bremsstrahlung X-rays you get from the electrons hitting the screen, which are probably the more important source.