meta user
network profile
| bio | website | |
|---|---|---|
| location | Greece | |
| age | 73 | |
| visits | member for | 2 years, 4 months |
| seen | 22 mins ago | |
| stats | profile views | 3,338 |
Retired experimental particle physicist
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May 11 |
answered | Explanation for the notion that physical laws break down at the Big Bang |
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May 10 |
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What causes the collapse of a Magnetic Field? The variation observed on earth are due to fluid motion changes which change the direction and magnitude of the generated field. Collapse would come if the fluid would solidify. |
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May 10 |
answered | What causes the collapse of a Magnetic Field? |
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May 9 |
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Uncertainty-principle and the Maxwell formalism of electromagnetic waves @dmckee there is a comment for mods here |
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May 9 |
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Is time travel possible? @BenCrowell as this was a migrated question from the skeptics.se I answered it in general terms. In the link given at the start of the question there are answers that go into detail, including yours. |
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May 9 |
answered | Underlying physical basis of an exponential distribution |
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May 9 |
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What happens to the energy not absorbed by a radio? Why don't you read something like howstuffworks.com/radio.htm |
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May 8 |
answered | If particles can find themselves spontaneously arranged, isn't entropy actually decreasing? |
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May 8 |
answered | Does more reflective aluminum foil make a room cooler compared to less reflective foil? |
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May 8 |
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Uncertainty-principle and the Maxwell formalism of electromagnetic waves the photon is an elementary particle, it has no E or B in the sense of classical EM wave. If you want to see how the classical wave is built up by an ensemble of photons see this blog entry motls.blogspot.com/2011/11/… |
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May 8 |
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The wavelength of a brainwave it is a biology question. en.wikipedia.org/wiki/Electroencephalography |
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May 7 |
answered | Uncertainty-principle and the Maxwell formalism of electromagnetic waves |
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May 7 |
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If everything in existence were increasing in size at some rate, would we be able to detect it? mabe an addendum is needed on the bound states . If space were expanding within an atom ..... |
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May 7 |
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There must be free positive charges, moving oppositely to electrons for the wire with current to stay neutral If you have a closed circuit fountain of water, where does the water come from? That is the analogue of your question. Energy need is supplied by a small motor but the number of water molecules is the same. In a closed circuit the number of electrons and positive charges is equal and charge adds to zero. The electrons just move along continuously as @dmckee explains. The energy needed is supplied by an electric motor or an electric battery |
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May 5 |
answered | What counts as “observation” in Schrödinger's Cat, and why are superpositions possible? |
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May 5 |
answered | What constant varies in the fine structure constant? |
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May 5 |
answered | Why Quantum Mechanics as a non-fundamental effective theory? |
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May 4 |
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What is the status of existing measurements of the speed of gravity? thanks for the links. Maybe I should have said supernova, instead of nova, to get a lot of the mass ejected. I do not understand the requirement of a necessary other theory.Suppose one star becomes supernova over a few days, the change in the orbit of the companion would depend on the gravitational speed . Of course a theory is necessary to get numbers out. |
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May 4 |
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Bound State of Only Massless Particles? Follows a Time-Like Trajectory? @BenCrowell cars exist because atoms and molecules exist following the SM. Cars are a meta level. Zero masses binding into a stable configuration would be a fundamental level manifestation, describable by a mathematical theory. |
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May 4 |
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Will a helicoper which is hovering inside a closed box move with the box when we move it? @MikeDunlavey yes, but the buoyancy of air is negligible, as will also be the momentum transfer to the air from the walls, for normal velocities attainable by boxes.The air will move around the helicopter and give a small push, it cannot carry it with it kinetically. |
