Comments by "Lepi Doptera" (@lepidoptera9337) on "Understanding Quantum Mechanics #2: Superposition and Entanglement" video.

  1. Yeah, that's very cool. Now stop watching bad scifi and learn some real physics. ;-)
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  2. Superposition is an abstract mathematical property, just like "orbit". Newton was on one level of abstraction, quantum mechanics is on another. It's still just abstraction.
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  3. Absolutely nothing in physics is probabilistic. Random processes don't satisfy any of the conservation laws.
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  4. Electrons don't have a spin projection until measured.
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  5.  @wmstuckey  OUTCOME, not as an actual realist physical state. Realism simply doesn't work in quantum mechanics. How many times do we have to repeat that before it sinks in? We knew this since 1927, latest. That's almost 100 years of people NOT listening to the physical facts.
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  6.  @wmstuckey  OUTCOME. A state is always an outcome of a measurement. That's no different from dice. You roll dice by giving them kinetic energy. At that point they don't have a state that can be expressed in terms of outcome states. The shed that kinetic energy by friction with the table. Now they have an outcome state... until you roll them again. Same thing is happening here. The outcome of a quantum measurement is the quantum of energy that the measurement device removes irreversibly from the quantum system. Without that removal process the value of that quantum is simply not defined. That's physics from 1927.
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  7.  @wmstuckey  How would I know that there is a quantum if I don't detect it? Do you believe in ghosts? In that case I will claim that the physical vacuum is full of ghost quanta that nobody can detect. How are you going to prove me wrong? That's not science. That's how religion works.
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  8.  @wmstuckey  How would I know that there is a quantum if I don't detect it? Do you believe in ghosts? In that case I will claim that the physical vacuum is full of ghost quanta that nobody can detect. How are you going to prove me wrong? That's not science. That's how religion works.
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  9. Yes. It's a linear equation because it was constructed that way. It basically just one possible representation of Kolmogorov's axioms for probability theory.
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  10. You keep hearing that because most people who are talking about quantum mechanics on the internet don't understand quantum mechanics. You also won't find reliable information on how to perform a 40 yard pass in American football around here, or how to play a Chopin piano concerto. All of these are professional skills that can only be learned in a professional environment.
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