Matterwave's latest activity
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Matterwave replied to the thread Graduate How valid is the indivisible interpretation of quantum mechanics?.I'm only an hour and a half in haha, and no, there's not been any discussion about entanglement. The only mention I've heard so far... -
Matterwave replied to the thread Graduate How valid is the indivisible interpretation of quantum mechanics?.New Robinson Podcast -- David Albert w/ Jacob Barandes. David gives his version of the theory in the first segment. I haven't watched...
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Matterwave replied to the thread Undergrad Why is gravity a fictitious force?.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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Matterwave reacted to Dale's post in the thread Undergrad Why is gravity a fictitious force? with
Like.
This is tidal gravity. It is curved spacetime, not flat. It is physical gravitation and cannot be removed by a change of reference... -
Matterwave replied to the thread Undergrad Why is gravity a fictitious force?.Just to understand your question better, when you bring in "extended body" here, are you envisioning that the body is large enough that...
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Matterwave replied to the thread Undergrad Why is gravity a fictitious force?.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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Matterwave replied to the thread Undergrad Why is gravity a fictitious force?.That's fair, and I could definitely be on board with teaching a coordinate independent view as a first-class principle. It does make...
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Matterwave reacted to PeterDonis's post in the thread Undergrad Why is gravity a fictitious force? with Like.
Yes.
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Matterwave replied to the thread Undergrad Why is gravity a fictitious force?.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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Matterwave replied to the thread Undergrad Why is ##x=e^y## the inverse of ##y=\int_1^x \frac{1}{t} dt##?.What is the "it" that you want to define as ##x=10^y##?
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Matterwave replied to the thread Undergrad Why is gravity a fictitious force?.In general, we only require that "physical laws look the same" in all *inertial* frames of reference (true for both Galilean and...
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Matterwave reacted to PeterDonis's post in the thread Graduate Applicability of Spin-2 Field Interpretation of GR with Like.
That was how the spin-2 field theory was first investigated in the 1960s. However, it took quite a few years to realize that the theory...
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Matterwave replied to the thread Graduate Applicability of Spin-2 Field Interpretation of GR.This is interesting to know! I always saw it, a long time ago, expressed starting with some perturbation assumptions like "let's express...
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Matterwave reacted to PeterDonis's post in the thread Graduate Applicability of Spin-2 Field Interpretation of GR with Like.
The spin-2 field model handles that just fine. Note that curvature near the event horizon is not necessarily "strong"--it goes like the...
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Matterwave replied to the thread Undergrad Some notes on LET for reference.What does it mean to "replicate" a theory? I would say SR is a special (non gravitating) case of GR. Not the other way around. (I feel...