Dale's latest activity
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Dale replied to the thread Undergrad Small question about constantly accelerating charges.Not the reference frame. The proper acceleration of the antenna is what matters. Is the antenna inertial or co-accelerating. Yes -
Dale replied to the thread Undergrad Small question about constantly accelerating charges.The question is not particularly controversial if the person asking the question clarifies one specific point that is usually neglected...
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Dale replied to the thread Undergrad Why is SI taught in US university physics courses instead of cgs?.Maxwell's equations are different in SI vs CGS units. The best source for that is this table from Wikipedia...
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Dale reacted to jbriggs444's post in the thread Undergrad Why is thermal energy treated differently than other kinds of energy? with
Like.
No, that is not the frame that I implicitly chose. The table does move with respect to the table+book COM frame. The frame that I had... -
Dale reacted to sophiecentaur's post in the thread Undergrad Why is SI taught in US university physics courses instead of cgs? with
Haha.
We could discuss all that stuff over a Pint of Best! -
Dale replied to the thread Undergrad Why is SI taught in US university physics courses instead of cgs?.Most publications in most STEM fields require SI. There are exceptions, of course, and hybrid units. But most professional science uses SI.
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Dale reacted to Herman Trivilino's post in the thread Undergrad Why is thermal energy treated differently than other kinds of energy? with Like.
When Newton wrote about action and reaction he was referring to forces. It was the 1680's. The concept of energy, if it even existed at...
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Dale replied to the thread Undergrad Why is thermal energy treated differently than other kinds of energy?.That isn’t surprising given how poorly written your original post was. This one was much better These equations are incorrect. The...
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Dale reacted to DaveE's post in the thread Why is it not allowed to question General Relativity? with Like.
Physicists already know that GR doesn't work with Quantum Mechanics. It isn't 100% correct. Many are trying to figure this out. So, it's...
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Dale replied to the thread Undergrad The missing 3D magnetism theory.If you actually want anyone to answer then you might want to focus on one well-described question rather than a dozen vague questions...
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Dale reacted to DaveE's post in the thread Undergrad 20 Megapascals of negative pressure... What? Please explain with Like.
This article (sorry, there's a paywall) describes ultrasound waves creating 20 Megapascals of negative pressure. What does that mean?
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What was the third one?
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Dale reacted to pervect's post in the thread High School True static equilibrium and effects on time with Like.
I have espoused that idea, and met a lot of resistance in certain instances. When I have the energy, I still do sometimes like to...
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Dale reacted to Ibix's post in the thread Undergrad Light clock treating horizontal and vertical motion differently? with Like.
You're thinking of stuff like Poincaré's 1904 paper, which has the complete maths of SR collected from empirical study of...
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Dale reacted to sophiecentaur's post in the thread Undergrad Light clock treating horizontal and vertical motion differently? with Like.
Physics has the luxury of the availability of very reliable and repeatable experiments. Whatever outcome people are "looking for" the...
