ohwilleke's latest activity
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ohwilleke reacted to PeroK's post in the thread I How Can Photons Be Massless Yet Have Energy According to Einstein's Equations? with
Like.
The equation ##E = mc^2## only applies to a particle with mass. And, indeed, that's its energy only when it is at rest. The full... -
ohwilleke reacted to Ibix's post in the thread I How Can Photons Be Massless Yet Have Energy According to Einstein's Equations? with Like.
That formula is only correct for stationary massive objects. The general formula is ##m^2c^4=E^2-p^2c^2##, from which you can see that...
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ohwilleke reacted to jhonconnor's post in the thread I Why is there such a difference between the total cross-section data? (simulation vs. experiment) with Like.
Well, I found that it's due the contribution of other states. In other words, for energies below 1 MeV, ##^3\mathrm{S}_1## and...
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ohwilleke replied to the thread B Asteroid 2024 YR4 has a 1% risk of a multi-megaton impact in 2032 (now ruled out).Crude order of magnitude, back of napkin estimates are still probably good enough to rule out EMP as a serious risk of the proposal. I...
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ohwilleke reacted to DaveC426913's post in the thread B Asteroid 2024 YR4 has a 1% risk of a multi-megaton impact in 2032 (now ruled out) with
Informative.
I think EMPs radii are on the order of hundreds of miles - maybe thousands of miles - not tens of thousands of miles, let alone... -
ohwilleke reacted to Frabjous's post in the thread B Asteroid 2024 YR4 has a 1% risk of a multi-megaton impact in 2032 (now ruled out) with Like.
I wonder how far a nuke needs to be from Earth to prevent significant EMP effects on a large number of satellites.
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ohwilleke reacted to PeterDonis's post in the thread I Physicists disagree wildly on what quantum mechanics says about real… with Like.
More precisely, our best current theories of physics do not contain any action at a distance, at least for one common meaning of that...
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ohwilleke reacted to PeroK's post in the thread I Physicists disagree wildly on what quantum mechanics says about real… with Like.
You have to if you study mathematics or modern physics. Although your main target is QM, the general theory of relativity entails...
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ohwilleke reacted to mitchell porter's post in the thread A LQG Legend Writes Paper Claiming GR Explains Dark Matter Phenomena with Like.
I'm a little baffled because I don't see any relationship between this paper and his quantum gravity papers. I thought the point of the...
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ohwilleke reacted to malawi_glenn's post in the thread A LQG Legend Writes Paper Claiming GR Explains Dark Matter Phenomena with Like.
https://en.wikipedia.org/wiki/Gravitoelectromagnetism Gravitoelectromagnetism, abbreviated GEM, refers to a set of formal analogies...
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ohwilleke reacted to difalcojr's post in the thread Thank you to mentors, advisors and members with Like.
I want to thank those members who interacted with me a couple of years ago in two Optics Forum threads. They were @Drakkith, @hutchphd...
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ohwilleke replied to the thread I Is Toponium a Reality Despite Top Quark's Rapid Decay?.The main discussion, after a lot of background for readers unfamiliar with the topic (the language in bold is the core substance of the...
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ohwilleke reacted to pines-demon's post in the thread I Is Toponium a Reality Despite Top Quark's Rapid Decay? with Like.
Check this article on how it has been hard to claim that toponium IS a thing: Don’t call it toponium
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ohwilleke replied to the thread I Is Toponium a Reality Despite Top Quark's Rapid Decay?.I'm not aware of any such claims before March of 2025.
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