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10 votes
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Radical hydrogen-boron reactor could leapfrog current nuclear fusion tech
11 votes -
What is space? It’s not what you think.
7 votes -
Fair dice (part 2/2)
4 votes -
An explanation of how gears affect the properties of rotational motion and how the shape of their teeth is more sophisticated than it may initially seem
5 votes -
What we know about dark matter
3 votes -
A brief history of quantum mechanics
7 votes -
Dark Energy may be an illusion: Gravitons themselves may have mass
20 votes -
The other dark matter candidate
4 votes -
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12 votes -
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6 votes -
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7 votes -
Quantum droplets win the 2019 Royal Society Publishing Photography Competition
9 votes -
Neutron stars – The most extreme things that are not black holes
10 votes -
Jackson Pollock deliberately avoided “coiling instabilities” when creating his paintings
5 votes -
Why the search for dark matter depends on ancient shipwrecks
7 votes -
The exquisite precision of time crystals
8 votes -
Loop quantum gravity explained
8 votes -
The 2019 Nobel Prize in Physics has been awarded, with one half to James Peebles and the other half jointly to Michel Mayor and Didier Queloz
7 votes -
‘Planet Nine’ may actually be a black hole
20 votes -
Quantum Darwinism, an idea to explain objective reality, passes first tests
11 votes -
Recently discovered neutron star is almost too massive to exist
6 votes -
Astronomers detect the most massive neutron star yet
11 votes -
Winners of the 2020 Breakthrough Prize in Life Sciences, Fundamental Physics and Mathematics announced, awarding a collective $21.6 million
5 votes -
Making new elements doesn’t pay. Just ask this Berkeley scientist
5 votes -
The size and shape of raindrops
3 votes -
Specification Gaming Examples in AI
10 votes -
Why a grape turns into a fireball in a microwave
9 votes -
Supergravity pioneers win $3m Special Breakthrough prize
8 votes -
A passion for physical realms, minute and massive (2001)
5 votes -
The math of Emil Konopinski
7 votes -
Virtual particles: What are they?
7 votes -
World’s largest nuclear fusion experiment clears milestone: ITER on track to begin operations in 2025
22 votes -
Inside a nuclear reactor (the High Flux Isotope Reactor at Oak Ridge National Laboratory)
8 votes -
Scientists piece together the largest US-based dark matter experiment
11 votes -
The quantum theory that peels away the mystery of measurement
5 votes -
Thorium and the future of nuclear energy
10 votes -
University of Chicago undergraduate physics bibliography
7 votes -
Albert Einstein's relativity document gifted to Nobel museum
4 votes -
Large Redmond Collider: CERN reveals plan to shift from Microsoft to open-source code after tenfold license fee hike
18 votes -
Physicists debate Hawking’s idea that the Universe had no beginning
13 votes -
Quantum computing is a marathon, not a sprint
5 votes -
Murray Gell-Mann, who peered at particles and saw the universe, dies at 89
8 votes -
SpaceX’s new Raptor rocket engine is a methane fueled full flow staged combustion cycle engine
15 votes -
The sky is blue. Why isn't everything blue?
14 votes -
Quantum computing for the very curious
6 votes -
Robert R. Wilson's congressional testimony in favor of building a particle collider at Fermilab, April 1969
5 votes -
I have a basic and possibly uninformed question about the event horizon of a black hole
It is my understanding that if you are looking at an object falling into a black hole from a remote viewpoint, then the object will appear to take “forever” to complete the fall into the black...
It is my understanding that if you are looking at an object falling into a black hole from a remote viewpoint, then the object will appear to take “forever” to complete the fall into the black hole. The object is effectively frozen in time at the black hole’s event horizon, from the remote viewer’s POV.
Is this the correct interpretation so far? If so, let’s remember that.
It is also my understanding that a black hole can increase in mass as it captures new objects. The mass does increase from an external viewpoint. Is this accurate?
If I understand known science on the above points, then the paradox I see here is that while the visual information is frozen in time from the external POV, the mass of the black hole does increase from the external POV. So is this where the Holographic Principle comes in? Or is there another explanation here, or am I off-base entirely?
Or is it just that the accretion disk gains mass and black holes never increase in mass from an external POV, after they are initially formed?
Is this known?
Please either attempt to answer my tortured question, or point me to material that might lead me ask a better question.
Thanks!
13 votes -
Thorium Energy Conference 2018 - discussion of Molten Salt Reactor concepts and the new nuclear industry
12 votes -
Astrophysical detection of the helium hydride ion HeH+
5 votes