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

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Pilot wave theory, a theory involving highly complex and non-linear differential equations, is fully equivalent to matrix mechanics, a theory involving only linear differential equations. Does this have implications for our ability to solve non-linear differential equations?

2217 upvotes

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What happens when a hypothetical black hole would exist that's so big that metric expansion becomes noticeable across it's diameter? Would this affect its Schwarzschild radius? It's temperature? Anything else?

13 upvotes

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Why is an event horizon neccesary for Hawking radiation? All explanations I've read so far seem like they would work just as well for a gravitational field that's not strong enough to create an event horizon.

12 upvotes

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If two photons interfere to form a standing wave field, does their energy density cancel in the nodes as well? What would the gravitational field stemming from a sufficiently intense standing wave field look like?

10 upvotes

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Can a positron interact with a neutron to produce a photon and a proton?

9 upvotes

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In thermodynamically reversible processes, entropy is conserved. Is there a symetry ascociated with this conservation law?

6 upvotes

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If I use linear polarized light to illuminate a fast-spinning plate covered with chiral molecules, will I see any circular dichroism? How fast would I need to spin the plate?

4 upvotes

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Why is the Cosmic Neutrino Background thermal? How can a neutrino gas thermalize if it doesn't emit black body radiation?

3 upvotes

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How efficient is transporting electricity by putting a battery on a truck or train vs. using long-distance power lines?

1 upvotes

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Can an object have so much positive charge that an electron cannot possibly escape it? Would such an object emit Hawking radiation?

1 upvotes

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Pilot wave theory, a theory involving highly complex and non-linear differential equations, is fully equivalent to matrix mechanics, a theory involving only linear differential equations. Does this have implications for our ability to solve non-linear differential equations?	2217
What happens when a hypothetical black hole would exist that's so big that metric expansion becomes noticeable across it's diameter? Would this affect its Schwarzschild radius? It's temperature? Anything else?	13
Why is an event horizon neccesary for Hawking radiation? All explanations I've read so far seem like they would work just as well for a gravitational field that's not strong enough to create an event horizon.	12
If two photons interfere to form a standing wave field, does their energy density cancel in the nodes as well? What would the gravitational field stemming from a sufficiently intense standing wave field look like?	10
Can a positron interact with a neutron to produce a photon and a proton?	9
In thermodynamically reversible processes, entropy is conserved. Is there a symetry ascociated with this conservation law?	6
If I use linear polarized light to illuminate a fast-spinning plate covered with chiral molecules, will I see any circular dichroism? How fast would I need to spin the plate?	4
Why is the Cosmic Neutrino Background thermal? How can a neutrino gas thermalize if it doesn't emit black body radiation?	3
How efficient is transporting electricity by putting a battery on a truck or train vs. using long-distance power lines?	1
Can an object have so much positive charge that an electron cannot possibly escape it? Would such an object emit Hawking radiation?	1