weirdoguy's latest activity
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Going by climate 'periods' perhaps it is 'coldest period'. But for most of the time homo sapiens has existed as a species it was... -
The full study is here - A 485-million-year history of Earth’s surface temperature The abiding relationship between CO2 and global...
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[mentors' note: this thread was spun off from...
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weirdoguy reacted to DaveC426913's post in the thread What papers is the CO2 climate change theory based on? with
Skeptical.
It seems it pretty academc now that the OP is struck out, but isn't Climate Change (still) on the PF list of verboten subjects? -
weirdoguy reacted to renormalize's post in the thread A Error in Landau-Lifshitz Vol 2, equation (2), page 277 with
Like.
Physics Forums is hosted in the USA, where copyright law allows limited "fair use" of protected materials for, among other reasons... -
weirdoguy reacted to PeroK's post in the thread I Does action at a distance violate any conservation principles? with Like.
Naively, instantaneous action at a distance ensures conservation. Newton's theory of gravity being a prime example. In particular...
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weirdoguy reacted to PeterDonis's post in the thread I Does action at a distance violate any conservation principles? with Like.
But such influences are not directly observable. All directly observable results are in accordance with standard QM. Standard QM obeys...
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weirdoguy replied to the thread I Why are continuously emitting radio pulsars not detected?.Is forbidden per PF rules.
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weirdoguy reacted to jbriggs444's post in the thread Reconcile poundforce w/slug and lbmass with Like.
You may want to read about geometrized units. Indeed, in this system Newton's universal gravitational constant ##G = 1##. I'd mentioned...
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weirdoguy reacted to Roady's post in the thread Reconcile poundforce w/slug and lbmass with Skeptical.
Units of BTU, ton's of chillwater, lb mass of steam, are in common use today. I doubt they changed units on Apollo missions to ease...
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weirdoguy reacted to Bandersnatch's post in the thread I How to explain the strange pulsar in the Crab Nebula? with Like.
It's a pulsar wind nebula, with shock waves and a jet aligned with rotation axis. Not a vortex or a cone of radiation of the type that...
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weirdoguy reacted to A.T.'s post in the thread Is this an oversimplification? (treating a lens as a set of prisms) with Like.
It's not misleading. It merely shows the core mechanism of a lens in the simplest way possible. I think it's the perfect way to...
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weirdoguy reacted to Nugatory's post in the thread B Debating the Validity of a Conversion Factor for Mass-Energy Equivalence with Like.
It is nonsense. The thread can remain closed.
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weirdoguy reacted to JimWhoKnew's post in the thread A Angular momentum uncertainty principle and the particle on a ring with Like.
Classically, if the ring is not in the X-Y plane then the particle's rotation is not about the Z-axis. Assuming constant ##\left|\vec...
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weirdoguy reacted to Dale's post in the thread B Can an expanding EM be quantized: E=mc^2? with Like.
Yes. That is the only kind of photon that exists. They can (e.g. a diverging lens). They don’t always (e.g. a converging lens). Radio...