PeroK's latest activity
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PeroK replied to the thread How fast is the fly's shadow moving?.The bit you have marked in red should be ##204 - 180 = 24##. PS and although you don't necessarily need an accurate diagram, your... -
Your angle marked as 66 degrees is wrong. The bearing of 204 is from north, isn't it? So, what will be the angle made with the south...
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PeroK replied to the thread How fast is the fly's shadow moving?.Okay, so your question is why to use sine and not cosine? What if the bearing was 270 degrees?
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PeroK replied to the thread How fast is the fly's shadow moving?.Is there a diagram? I would have assumed from the question that the fly is flying horizontally.
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PeroK replied to the thread Courses What are the best A-Level options for someone wanting to do Physics?.Phew! I thought it might be Detox!
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PeroK replied to the thread A three month long summer vacation from public school seems stupid.I don't see that the education system is responsible for that.
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PeroK reacted to Ibix's post in the thread I I don't see how a black hole's event horizon can be crossed with
Like.
I don't think that makes sense either. There are two distinct spacetimes being considered. In both of them the infaller crosses the... -
PeroK reacted to Ibix's post in the thread I I don't see how a black hole's event horizon can be crossed with Like.
The question you need to answer is what you want out of the discussion. If you want facts about black holes then almost any source is...
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PeroK replied to the thread I I don't see how a black hole's event horizon can be crossed.I admit haven't done a scientific analysis, but I think it's almost impossible to understand relativity without studying it from an...
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PeroK reacted to Foretranimal's post in the thread I I don't see how a black hole's event horizon can be crossed with Like.
That would be the clever insult Dirac threw at a student who made a wild guess about the wavelength of visible light when he didn't...
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PeroK replied to the thread A three month long summer vacation from public school seems stupid.By the same argument, you could vave $200 billion dollars annually by reducing the school year by 10 weeks. And, of course, you could...
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PeroK reacted to sevensages's post in the thread A three month long summer vacation from public school seems stupid with
Skeptical.
And we would have a better educated population if the summer vacation was reduced to two weeks. -
PeroK replied to the thread Greatest possible value of a constant in polynomial.Alternatively, for integers ##p, q, b##, wlog take ##p = 1##, with ##b = 27q + 70/q##. For ##b## to be an integer, ##q## must divide...
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PeroK replied to the thread Greatest possible value of a constant in polynomial.This question makes no sense to me. If ##p, q## are fixed, then that determines ##b##. There is no question of maximising ##b## in...
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PeroK replied to the thread I I don't see how a black hole's event horizon can be crossed.Yes, that's an excellent summary. There is a further point that an observer is not obliged to anayse things using any particular...