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From	Message
apatzer 12-Feb-25, 11:54	Fiat Lux Magnetism works because of an exchange of photon's. This is a very complex dynamic.bin fact matter is mostly empty space. It is the electromagnetic force that keeps a person from walking through walls or falling through floors. A photon (commonly known as light) is a packet of energy with no mass. Moving at the speed of light. So that give new meaning to "and God said let there be Light" it isn't just about turning the lights on. However, here is a question. If light/, photon's have no mass. Why would they conform to the curvature of space? Giving the illusion that a massless particle is affected by gravity?
jonheck 12-Feb-25, 12:45	Apatzer Photons? Our knowledge is growing, but the jury is still out.
bobspringett 12-Feb-25, 13:02	Patz My understanding is that although they have no mass, they have momentum. Don't ask me how that isn't a contradiction! Things are different at lightspeed. So having momentum, they maintain 'straight' trajectories; with 'straight' meaning that if space curves, so do the photons to match it. Where's Shiva when you need him?
jonheck 12-Feb-25, 23:14	<Don’t ask me how that (no mass, yes momentum) isn’t a contradiction!> I do believe that may what the holdout jurist in the photon case are wondering. Einstein provided us with knowledge that was a significant step toward our ultimate understanding of the universe. We have learned a few things in the century since he came up with relativity. If relativity is an ultimate truth, then so be it. If it is not, then it should be regarded like other theories from the near and far past that served their purpose while we awaited enlightenment that allowed us to move beyond their imposed barriers to knowledge. Our prevailing understandings of electricity through most of the 19th century provided for significant knowledge growth on the subject, but if parts of those formally celebrated theories had not been later proven to be completely false, thereby allowing our knowledge to commence moving on later in the century, things would be a lot different around here.
lord_shiva 15-Feb-25, 13:28	Jury is In I think it was around 1919. There was a total eclipse. Astronomers had to sail many miles to a location where they could measure stellar positions, and sure enough, starlight gets bent. The explanation is that it isn’t starlight that is bent, but space. GR was published in 1915, a decade after SR. So the 1919 data was the first time there was a good opportunity for collecting daytime starlight. The light just follows is spatial geodesic. It isn’t actually itself impacted by gravity. So far as light knows it is going perfectly straight. But to be even more accurate, light knows nothing of time or space. It has frequency and direction, the gauge boson is a vector boson. Otherwise it is timeless, and space utterly meaningless. Where it is born touches where it dies, instantaneously.
lord_shiva 15-Feb-25, 15:15	Terms GR = General Relativity, Einstein’s theory of gravity replacing Newton. SR = Special Relativity, dealing with space-time and mass dilation. Space gets distorted in the travel direction, personal space. That is objective space, usually referred to as length. Height and width don’t change, nor does subjective length because how would you tell? Your ruler gets foreshortened same as you. Subjective realm is what you experience, objective is the outside world. Or subjective is the mover is subject to, objective is external.
mo-oneandmore 15-Feb-25, 20:00	Magnetism and photons Here's a series if interesting questions and answers from Van Physics, hosted by the Univerisity of Illinois on the subject "Magnetic Fields are Made of Photons" Y'all might just learn something here boys, but y'all need to read Gauss mathematics to get the big-time brainy stuff about magnetism (not electromagnetism), even Gauss knew nothing about those pesky photons van.physics.illinois.edu. And here's Carl Friedrick Gauss for ya --- The Prince of Mathematics and one of my favorite dudes. en.wikipedia.org
lord_shiva 15-Feb-25, 23:16	Mo Thanks for those links. While I knew magnetism was mediated by photons, I lways wondered why they were not visible in any part of the spectrum. Problem solved!
mo-oneandmore 16-Feb-25, 07:15	Shiva Einstein gave great credit to Gauss for his in-the-grave assistance with helping him develop Relativity, and there are those (including Einstein) who say that Gauss have had a strong handle on Einstein's greatest all time theory (My opinion  ) “The importance of C.F. Gauss for the development of modern physical theory and especially for the mathematical fundament of the theory of relativity is overwhelming indeed; also his achievement of the system of absolute measurement in the field of electromagnetism. In my opinion it is impossible to achieve a coherent objective picture of the world on the basis of concepts which are taken more or less from inner psychological experience.” ― Albert Einstein
mo-oneandmore 16-Feb-25, 07:49	A book called "Prince of Mathematics" Gauss was a bit like Bach was for music majors for the way that his work in physics and mathematics were necessary study from first year to phd thesis selection. brilliant.org

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