Dale's latest activity
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Dale reacted to anuttarasammyak's post in the thread Undergrad Uncertainty and particle in a box with
Like.
These solution wave functions must be zero outside the box. They are not simple sinusoids functions. Their momentum wave functions do... -
Dale reacted to pbuk's post in the thread Insights Is There Really a Tidal Bulge? Exploring the Debate and Its Implications with Like.
Unfortunately this Insight perpetuates two commonly repeated myths about Newton's work on tides, namely Newton believed that the time...
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Dale reacted to weirdoguy's post in the thread Undergrad Is Water's Volume Expansion Upon Freezing an Intrinsic Property? with Like.
I don't even think that what you do with your experiments (with so many complexities and variables) is covered in any textbook. I am...
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Dale replied to the thread Undergrad Is Water's Volume Expansion Upon Freezing an Intrinsic Property?.Excellent. Most of the suggestions you have received can be done with kitchen equipment. This is simply not correct. I have been a peer...
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Dale reacted to PeterDonis's post in the thread Undergrad Some notes on LET for reference with Like.
LET makes all of the same predictions as standard SR; it's just a different interpretation (and one we don't discuss here since there's...
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Dale reacted to Matterwave's post in the thread Undergrad Why is gravity a fictitious force? with Like.
If the "second derivative is (just) enough to detect it" then it means you are measuring curvature. :) The geodesic deviation equation...
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Dale reacted to PeterDonis's post in the thread Undergrad Why is gravity a fictitious force? with Like.
But, as has already been pointed out, none of this can be done within a single locally flat patch. You have to look at a region large...
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Dale replied to the thread Undergrad Why is gravity a fictitious force?.This is tidal gravity. It is curved spacetime, not flat. It is physical gravitation and cannot be removed by a change of reference...
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Dale replied to the thread Undergrad Why is gravity a fictitious force?.I am not sure what kind of scenario you are envisioning here. In flat spacetime there are no tidal effects. So what internal stresses...
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Dale reacted to Matterwave's post in the thread Undergrad Why is gravity a fictitious force? with Like.
Well for me it makes it a bit harder :P But also fair, that's my gap, I should not have implied it for everyone. Thanks for the...
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Dale reacted to Matterwave's post in the thread Undergrad Why is gravity a fictitious force? with Like.
I put the "physical laws looks the same" in quotes because I realized that was a rather loose statement but it seemed warranted in this...
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Dale reacted to PeterDonis's post in the thread Undergrad Why is gravity a fictitious force? with Like.
In SR, yes. In GR, no--in GR the laws have to look the same in all frames, not just inertial frames.
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From my understanding, LET is based on the Lorentz Transformations--- somehow, maybe just as a set of formulas or maybe an element of a...
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I agree... and I was hesitant to follow up on that early comment mentioning LET... but this LET-thing has always been puzzling to me. I...
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Dale replied to the thread Undergrad Simplified Special Relativity: Looking to get roasted on this.I would say that too. A special case always fails to replicate a general case. By “replicate” I am talking about predictions. GR makes...