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Itoero

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Everything posted by Itoero

  1. LabRat1 says "he jumps of the table before impact" but according to you there is no table to jump off????????? You can of course not transfer the complete momentum from the table on the floor, but you can transfer most of it when you are extremely fast. In free-running people have a good technique in which they roll to absorb the impact from a high jump. His ability to roll is not immaterial, it's the only way he can survive such a jump.
  2. If you don't have acces to something that breaks your fall (snow, water...) then I think the only way he can survive is buy doing a roll....to absorb the impact. If he is fast enough to jump of the table before impact then I suppose he's fast enough to apply a perfect roll which absorbs the impact.
  3. Today I learned how hot temperatures can ground airplanes. The problem with flying in hot temperatures is similar to the problem faced in high altitudes: thin air. Hotter air is less dense, which means there is less air beneath the wings for lifting the aircraft and less air to flow through the jet engines.
  4. But why does the singularity only exists in the center of BH's? Why not at the event horizon?
  5. Physical information refers generally to the information that is contained in a physical system. Info is basically "that which can distinguish one thing from another".You can call a lot of things info, depending on the context they are in. I'm not hell bent, I'm not posting my idea's Get a grip. Info is basically "that which can distinguish one thing from another". Mass is a property of physical body. You can measure this mass. Everything you can measure is info.
  6. If the table is next to a deep enough pool or the table is on a floating device on a deep pool then he might survive. By jumping of the table before impact, you simply postpone the moment of impact.(conservation of energy)
  7. The existence of Jesus Christ? I thought Scotty beamed him up a long time ago. Don't you think it's odd that many Christians believe in different things which they all think are proven beyond doubt? Why doesn't your god make the evidence for his existence scientifically provable to form global 'religious' equality? Does your god like all the pointless killings due to religious inequality? If a theistic religion get's scientifically proven it's of course not a 'religion' anymore.
  8. My favorite quotes so far:
  9. Seriously? General Relativity implies the formation of Black Holes.https://en.wikipedia.org/wiki/No-hair_theorem It doesn't state anything about info that passes the Black Hole Event Horizon.https://arxiv.org/pdf/0805.3880.pdf
  10. That's a very simplistic view. It's a quote from Niels Bohr, this is the complete quote: "There is no quantum world. There is only an abstract quantum physical description. It is wrong to think that the task of physics is to find out how nature is. Physics concerns what we can say about nature... "
  11. Itoero

    Male rape

    I agree, the problem is that when a female gets raped it's because they are physically forced to have sex. When a guy gets raped its due to mental dominance of a female...maybe not in this case...
  12. Correct. It is wrong to think that the task of physics is to find out how Nature is. Physics concerns what we say about Nature.
  13. The Friedmann–Lemaître–Robertson–Walker metric shows a homogenous, isotropic expanding or contracting universe. https://arxiv.org/pdf/1203.1819.pdf This implies that all galaxies accelerate the same or differently depending on their mass,, regardless of the space they are in.
  14. There is no theoretical mass of the whole universe because we don't know the size of the universe. People do study the mass-related properties of the observable universe.
  15. Today I learned how Noise-cancelling headphones work. Noise-cancelling headphones use active noise control. They incorporate a microphone that measures ambient sound, generate a waveform that is the exact negative of the ambient sound, and mix it with any audio signal the listener desires.
  16. You can't prove the absence of negative mass, like you can't prove the absence of god.
  17. That's not known. Or do you have anything to back that up?
  18. The no-hair theorem is about the forming of Black Holes. It states that Black Holes can be completely characterized by only three externally observable classical parameters: mass, electric charge, and angular momentum. It's not known what happens with matter that enters a black hole.
  19. Only the last sentence is mine, the only thing you reacted on...You have to measure relativistic mass because it's there. Do you know how difficult it is to measure the precise mass of certain systems? You should have a look to what GR says about mass... -The wave particle duality is about Heisenberg's Uncertainty...so is invariant and relativistic mass. A wave has relativistic mass, if you measure it then you get invariant mass. -The speedlimit of (rest)massless particles like a photon makes more sense if you understand relativistic mass. The kinetic energy of a photon is (relativistic) mass which prevents photons from going faster then c. The mass of a photon is kinetic energy which prevents light from slowing down but also limits the speed. -In the photoelectric effect, you transmit relativistic mass from photons to electrons. -If you accelerate a mass then you increase the speed which increases the rest mass with relativistic mass. This increases total mass which increases the force you need to apply for the acceleration. F=m.a -Mass distorts space time. So a better understanding of the relation energy-mass is IMO necessary to find evidence for a quantum-gravity model. It doesn't make sense not to use relativistic mass.
  20. Why not? They don't know what happens with info that enters a black hole. This info is energy or mass.
  21. Then the force is the limiting factor, it causes the acceleration rate.
  22. I'm sorry, I just like the name 'Georges' ever since the name was mentioned in a comedy show.
  23. F=m.a So the higher the acceleration rate, the more force you need.
  24. Hawking proposed that information is lost in black holes(this started the black hole info paradox). Susskind disagreed, arguing that Hawking's conclusions violated one of the most basic scientific laws of the universe, the conservation of information. This started a long debate (mostly between Susskind and Hawking)...called the Black hole war. Susskind wrote a book called: Black Hole War: My Battle with Stephen Hawking to Make the World Safe for Quantum Mechanics During a visit of Susskind with Gerard 't Hooft (in Holland), Gerard 't Hooft proposed the Holographic principle. If this principle is correct then Black Holes are basically holograms which explains the black hole info paradox and fits with the No- hair theorem. https://en.wikipedia.org/wiki/No-hair_theorem Hawking thinks a black hole has soft hair: low-energy quantum excitations that release information(of for example mass that entered the black hole). when the black hole evaporates. https://arxiv.org/pdf/1601.00921.pdf This also solves the black hole info paradox.
  25. I just mentioned the black hole info paradox. This should be mentioned if someone asks about conservation of mass.
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