Roberto Pavani's latest activity
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Roberto Pavani replied to the thread Graduate Are mass, particles, and fields fundamental?.Fair point, let me be precise, because I mean something stronger than ordinary indirect inference. With a microscope, the object and... -
Roberto Pavani reacted to ohwilleke's post in the thread Graduate Are mass, particles, and fields fundamental? with
Like.
They aren't necessarily fundamental, but we have no real idea what kind of deeper physical structure could cause what we see and there... -
Roberto Pavani replied to the thread High School Why is g = 9.8 and from where/what triggers the upward acceleration?.Fair enough, I missed a comma. “We have an upward proper acceleration, with ‘upward’ defined relative to a local freely-falling frame.”
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Roberto Pavani replied to the thread How do atoms build thoughts and emotions?.A single self-report is only one output of the system. In the systems-theoretic sense, observability requires that the internal...
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Roberto Pavani reacted to Sagittarius A-Star's post in the thread High School Why is g = 9.8 and from where/what triggers the upward acceleration? with
Agree.
That's because the related coordinate-acceleration of the ground is relative to a local free falling coordinate-system. Such an inertial... -
Roberto Pavani replied to the thread High School Why is g = 9.8 and from where/what triggers the upward acceleration?.I think the phrase "we are accelerated upward" can be misleading if taken too literally. We are not moving upward relative to the Earth...
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Roberto Pavani reacted to loop quantum gravity's post in the thread High School Why is g = 9.8 and from where/what triggers the upward acceleration? with Like.
There are two forces acting on Earth's surface: Gravity pushing us downwards and that which reacts to it is the force exerted by the...
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Roberto Pavani replied to the thread Graduate Are mass, particles, and fields fundamental?.If a deeper layer of reality exists, I suspect it could only be verified indirectly. Since all experiments ultimately use matter and...
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Roberto Pavani replied to the thread High School Why is g = 9.8 and from where/what triggers the upward acceleration?.The upward proper acceleration is provided by the electromagnetic contact forces exerted by the ground. Its magnitude is about ## 9.8...
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Roberto Pavani replied to the thread Graduate Continuity of the tangential components of electric field across an interface.I may be missing something, but in electrostatics ##E_s = -\frac{\partial V}{\partial s}.## If the potential is continuous across the...
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Roberto Pavani replied to the thread Undergrad Could future technology test what lies beyond the observable universe?.I agree regarding the standard nomenclature. My comment was aimed at the OP's question, which suggests that those distinctions may not...
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Roberto Pavani replied to the thread Undergrad Are the space and time parts of a standing wave in 3D separable?.As far as I understand it, not by itself. Separation of variables shows that solutions of the form ## \Psi(\mathbf r,t)=X(\mathbf...
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Roberto Pavani replied to the thread Undergrad Could future technology test what lies beyond the observable universe?.Observable universe ≠ universe observed today ≠ universe observed in the future. ## \text{Universe observed today} \subset...
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Roberto Pavani replied to the thread Undergrad Are the space and time parts of a standing wave in 3D separable?.The separation is not a consequence of the wave being stationary. Rather, stationary modes arise from separable solutions of the 3D wave...
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Roberto Pavani replied to the thread How do atoms build thoughts and emotions?.Short answer: My working hypothesis is that consciousness is what happens when an information-processing system starts modelling itself...