Everything posted by Genady
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A Query About Books - Specifically Around the Subjects of Supernovae and Stellar Remenants
Supernova Explosions (Astronomy and Astrophysics Library): Branch, David, Wheeler, J. Craig: 9783662550526: Amazon.com: Books
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Paradox? (split from Is FTL actually possible?)
Give me a bit more detailed scenario and I'll try.
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Paradox? (split from Is FTL actually possible?)
But it could.
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What is the Purpose of Life ?
It is a very narrow view.
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Paradox? (split from Is FTL actually possible?)
I did not say anything about a paradox being true. I don't even know what it means.
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How does human perceive the existence of universals?
According to a major school of thought in psychology and philosophy, concepts exist separately from their various sensory, motor, and affective representations. Using a triangle example, Kemmerer in Concepts in the Brain (pp. 253-254, Oxford University Press) says,
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Paradox? (split from Is FTL actually possible?)
They would rather travel back each to their own past, wouldn't they? So, they may even arrive there not as one object at all.
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Paradox? (split from Is FTL actually possible?)
Breaking laws of electrodynamics and energy conservation would be quite a big deal. It would lead to breaking of quantum electrodynamics, quantum field theory, gauge theory, standard model, thermodynamics, etc.
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Paradox? (split from Is FTL actually possible?)
This scenario breaks the laws of electrodynamics. It breaks the law of energy conservation. Etc. If such a scenario possible, the physics is all wrong.
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Photons effect
Magnetism and electricity are effects of electromagnetic field. Light is waves in this field. Photons are excitations of this field.
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Paradox? (split from Is FTL actually possible?)
The electron travelling faster than light in water does not break any physics because physics in fact says that it cannot move faster than the speed of light in vacuum. Light itself does not set a limit. The limit is the speed, c. Light and any other massless particle move in vacuum with this speed, c. This is the connection to the "speed of light."
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Paradox? (split from Is FTL actually possible?)
Yes, it does. The electrons in your "phone", in the past, start moving without a physical cause.
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Paradox? (split from Is FTL actually possible?)
Yes, it does.
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What is the Purpose of Life ?
OK, next time. When the object is something more interesting than soul. DNA, for example.
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What is the Purpose of Life ?
How can I know what is a metaphorical DNA?
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Paradox? (split from Is FTL actually possible?)
If you write it down, it exists on paper, which is outside of our brain.
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Book about unsolvable/too difficult problems - what is the title?
May it be this: Unsolved Problems in Number Theory (Problem Books in Mathematics, 1): Guy, Richard: 9780387208602: Amazon.com: Books
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Social science - balancing out sexual leverages between genders?
This is not a way to get peer reviews. You need to clearly describe your research in a clear format such as Abstract - Introduction - Materials and Methods - Results - Discussion. Then peer reviewers will relate and respond to its content.
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ChatGPT Debates
Humans create lighthearted things of this type, which, contrary to the ChatGPT's compilations, are not empty of content. See, for example, Picasso at the Lapin Agile - Wikipedia:
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Social science - balancing out sexual leverages between genders?
Why wouldn't you get peer reviews from a scientific journal in the corresponding field of science?
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Paradox? (split from Is FTL actually possible?)
Yes, you're right. That was how it started. However, I did not discuss her claims as I did not see the video. (Perhaps this led to this thread being split.) I wanted to point out that causality violation appears in SR as a result of FTL also without a signal being sent back in time.
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Paradox? (split from Is FTL actually possible?)
No, I don't. I know that causality is violated. Assuming that a 'signal' moves faster than light leads to violation of causality. This is my whole point. See the OP here: https://www.scienceforums.net/topic/130520-paradox-split-from-is-ftl-actually-possible/
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Paradox? (split from Is FTL actually possible?)
The Lorentz transformation gives times of the same two events in another observer's frame knowing their times and coordinates in the first observer's frame.
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Paradox? (split from Is FTL actually possible?)
Yes, it took time 1 in the A's frame: the signal left the source at time ts=0 and arrived at the target at time tr=1.
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Paradox? (split from Is FTL actually possible?)
Let's say some signal moves with twice the speed of light in observer A's frame. It is sent, the event S, at time ts=0 from the origin xs=0. At the time tr=1 it arrives at the distance coordinate xr=2, where a detector blows a bomb. This is event R. Observer B moves with the speed v=3/5 c along the x axis, with their x axes and origins coincide. In the B's frame, the event S occurs at ts'=0, xs'=0. The event R in his frame occurs at tr' = gamma*(tr - v*xr/c2) = 5/4 * (1 - 6/5) = -1/4 i.e., 1/4 before the event S.