/u/_spoderman_'s posts in /r/askscience

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How often do neutrinos interact with us? What happens when they do?

2269 upvotes

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Planck's quantum hypothesis proves that a body can't emit radiation beyond a certain frequency, but this still means that it will emit waves in ALL THE POSSIBLE FREQUENCIES below this limit. So wouldn't the body still be losing energy at an infinite rate?

1894 upvotes

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What are symmetries?

51 upvotes

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What happens after a black hole?

12 upvotes

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What is spin?

8 upvotes

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Do infinite trials guarantee all possible outcomes?

5 upvotes

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Are vacuums absolutely, completely devoid of physical particles?

1 upvotes

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Is a "vacuum" absolutely, completely empty of everything, every field, every virtual particle/particle pair, every real particle? Or are what we call vacuums not actually completely empty?

1 upvotes

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Can someone explain, with minimal math, why Roger Penrose's theory of singularities requires the universe to be infinite in size?

1 upvotes

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If there's a singularity at the center of every black hole, shouldn't the gravitational pull of black holes be infinite, as a singularity is, by its very definition, something with an infinite density?

0 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
How often do neutrinos interact with us? What happens when they do?	2269
Planck's quantum hypothesis proves that a body can't emit radiation beyond a certain frequency, but this still means that it will emit waves in ALL THE POSSIBLE FREQUENCIES below this limit. So wouldn't the body still be losing energy at an infinite rate?	1894
What are symmetries?	51
What happens after a black hole?	12
What is spin?	8
Do infinite trials guarantee all possible outcomes?	5
Are vacuums absolutely, completely devoid of physical particles?	1
Is a "vacuum" absolutely, completely empty of everything, every field, every virtual particle/particle pair, every real particle? Or are what we call vacuums not actually completely empty?	1
Can someone explain, with minimal math, why Roger Penrose's theory of singularities requires the universe to be infinite in size?	1
If there's a singularity at the center of every black hole, shouldn't the gravitational pull of black holes be infinite, as a singularity is, by its very definition, something with an infinite density?	0