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Message: <blockquote data-quote="Umbran" data-source="post: 2036845" data-attributes="member: 177">Technically, that isn't what is said at all.  What is said is that light has the properties of both wave and particle.  That doesn't say that light is both, merely that it can be described either way, depending upon the situation.  In the end, the wave/particle nature of a thing is really a matter of mathematical convenience.  Not so much a question of what the thing is, as what math you'll use to describe it.  So, you might venture to say that light is particle and wave, or that it is neither.  The fact that light is not special might weigh into your choice.  The coffee mug on your desk acts liek a wave, too.  It just has so incredibly short a wavelength that for practical purposes you might as well call it a particle and be done with it.The Ether Hypothesis was disproven by Michelson and Morley back in 1907.  This may well impact your thoughts on the matter.Mathematically speaking, quantum mechanics uses time as a dimension.  And quantum mechanics makes the computer you posted with work, so you might want to be careful which parts of it you try to refute <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":)" title="Smile    :)"  data-smilie="1"data-shortname=":)" />Time is observably not a universal constant.  Many times, we have verified that the passage of time varies depending upon the relative motion of the observers.  And that's not he oly source of different time-flow.  There's a whole lot of experimental data that says you're wrong here.  Sorry.No, it isn't just time lag in transmission.  That's accounted for separately.  And it isn't just that the satellites are moving so fast.  It's also because the ground and the satellites are at different points in Earth's gravity well.  Relative motion aside, simple altitude also has a measureable effect.Light has a constant speed within a given medium.  The speed of light in vacuum is a bit faster than the speed of light in air, or water, yes.  But in a given medium, the speed of light is observably constant. - it has a constant maximum speed perhaps, but light slows down and refracts as it interacts with particles. This is observable, but it puzzles me why this isn't taken into account in any science journal I've read.  Further, light seems to speed up again when the interference is removed.  Again, why?I don't think anything exists at the smallest level.  If energy and matter are indeed one and the same as implied and later proved by E=mc[sup]2[/sup] then how does this transition work.The subject of transparency and opacity is a matter of details of solid state physics.  While I cannot think of a way to adequately explain it without math that makes even my head hurt, there's nothing very mysterious about it.  For an idaequate description - you must remember that matter is mostly empty space.  It is not all all odd that a particle (or wave) of very small size should be able to pass through matter without encountering anything and being absorbed.  There's really very little there to stop the light, you know.  There is truth and falseness here.  Quantum mechanically - complete rest is in fact impossible, as it would violate the Uncertainty Principle.  However best theory says that the "origin of the Universe" is not a place within the Universe that you can point, making that idea a bit hinkey.</blockquote>

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