PeroK's latest activity
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PeroK reacted to PAllen's post in the thread I Why fixed point iteration of ##x^3 = 1-x^2## doesn't converge when ##x_0= 0## with
Like.
Rechecking my work, I find that this is a very interesting case. The root is about .755, and g’(root) just under 1 in absolute value... -
PeroK reacted to DaveE's post in the thread B The wave function of the electron doesn't collapse when passing through air? with Like.
IDK. I'm not qualified or inclined to solve this for you. But I would take a serious look at the classical limit. Suppose King Kong is...
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Is it ok to introduce a new model for cosmology here? It is a variation on the aether theory I don't think has been noticed or explored...
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PeroK reacted to PeterDonis's post in the thread A Challenge to Bohmian mechanics by Sharoglazova et al, Nature, 2025 with Like.
Which should not be used as a reference in this discussion, since we already have papers on both sides of the argument. Accordingly...
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PeroK replied to the thread How come violet, with the shortest wavelength, is refracted the most?.Yes. As I suspected, it's quite advanced (chapter 9) and entails satisfying Maxwell's equations for a light wave obliquely incident on...
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PeroK reacted to Demystifier's post in the thread A Challenge to Bohmian mechanics by Sharoglazova et al, Nature, 2025 with Like.
Here it is: https://arxiv.org/abs/2507.08049
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PeroK replied to the thread Calculating the time needed until a known velocity for a vehicle with friction as a function of velocity.That looks more like air resistance. The point of having wheels is that they roll and avoid friction. Also, tires are generally made...
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PeroK reacted to fresh_42's post in the thread I Why fixed point iteration of ##x^3 = 1-x^2## doesn't converge when ##x_0= 0## with Like.
You are looking for a fixed point of the function ##g(x)=\sqrt[3]{1-x^2}.## The first thing is to check whether we have a contraction...
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PeroK reacted to PAllen's post in the thread I Why fixed point iteration of ##x^3 = 1-x^2## doesn't converge when ##x_0= 0## with Like.
A sufficient contrition is different from a necessary condition.
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PeroK replied to the thread Studying Struggling with exercises after reading quantum mechanics textbook.You'll need to be more specific about the exercises you can't do. It's years since I studied that book, but I don't remember the...
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PeroK replied to the thread How come violet, with the shortest wavelength, is refracted the most?.I can give you a partial answer. The speed of light in a medium depends on the dielectric properties of medium and the wavelength of the...
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PeroK reacted to TensorCalculus's post in the thread Curious Young Physicist Exploring the Universe with
Love.
Don't worry, it can be understood through thorough thought though. -
PeroK replied to the thread B How to calculate this conditional probability?.PPS You can't really calculate ##P(G_B|X_A)##, as it's an assumption of the problem that this is 1/2. I.e. in order to calculate...
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PeroK replied to the thread B How to calculate this conditional probability?.PS you are asked to calculate ##P(G_B|X_A)##, which is fairly meaningless. Note that this is not ##P(X_A|G_B)##, which is the...
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PeroK replied to the thread B How to calculate this conditional probability?.This is tricky. The equally likely events are ##X_A, X_B, X_C##, each with a probability ##1/3##. If ##X_A##, then the guard tells A...
