PeroK's latest activity
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In newtonian physics, the 1st Law describes bodies that are not accelerating. There is no net external force acting on it. There... -
PeroK replied to the thread Study: Social media probably can’t be fixed.It's a reference to The Forbibben Planet (1956). The Krell civilization built a machine that granted their every wish. But, when they...
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PeroK replied to the thread Study: Social media probably can’t be fixed.They'll not feel so bad, seeing it happening to us as well!
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PeroK replied to the thread B Newton's first law?.It makes no difference. I guess, if you were starting at the beginning, then the body would have no forces acting on it. After you've...
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PeroK reacted to Dale's post in the thread B Why is the 3 body problem unsolvable? And what will happen if someone solves it? with
Informative.
It is interesting to know that the first computers (e.g. the ENIAC) were built specifically to conveniently calculate non-analytical... -
PeroK replied to the thread Study: Social media probably can’t be fixed.The monster from the id has been loosed.
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PeroK reacted to Filip Larsen's post in the thread Study: Social media probably can’t be fixed with
Like.
As one who has never really used social media and thus been a bit baffled at the public discussion of the toxicity and other issues they... -
PeroK replied to the thread B Why is the 3 body problem unsolvable? And what will happen if someone solves it?.PS the ancient Greeks were obsessed by rational numbers and didn't like it when irrational numbers starting popping up. We know that no...
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PeroK replied to the thread B Why is the 3 body problem unsolvable? And what will happen if someone solves it?.The problem is that there are hardly any standard functions: polynomials, trig functions, exponential and logs. That's about it. There...
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PeroK reacted to Dale's post in the thread B Why is the 3 body problem unsolvable? And what will happen if someone solves it? with Like.
It is already solved. The solution is just not analytic.
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PeroK replied to the thread Irodov- 1.123- Simple conceptual question with two masses connected by a spring.What I do with these problems is try to think them through first. My instinct is forget formulas for now and try to figure out what...
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PeroK replied to the thread B Why is the 3 body problem unsolvable? And what will happen if someone solves it?.I once heard the analogy that studying systems with analytic solutions is a bit like studying a single animal, like the elephant. And...
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PeroK reacted to Muu9's post in the thread Need a book on Modern Physics to supplement Griffiths QM with Like.
Which math? Linear algebra and bra ket notation?
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PeroK replied to the thread I Does action at a distance violate any conservation principles?.Naively, instantaneous action at a distance ensures conservation. Newton's theory of gravity being a prime example. In particular...
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PeroK reacted to MidgetDwarf's post in the thread Need a book on Modern Physics to supplement Griffiths QM with
Skeptical.
It doesn't shy away from the mathematics. Griffiths does. While still being explanatory. It overlaps with the more sophisticated...