Genady
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Everything posted by Genady
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A different way of looking at the trampoline analogy
Genady replied to geordief's topic in Relativity
It depends on the symmetries of a situation. For example, a spherically symmetric case, e.g., Schwarzschild black hole, is usually visualized in 2D, i.e., temporal and radial. -
A different way of looking at the trampoline analogy
Genady replied to geordief's topic in Relativity
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I really need your help with some calculations
Genady replied to tmdarkmatter's topic in Astronomy and Cosmology
At the very far distance, the angle between light rays from the star becomes 0, that is the rays are just parallel to each other. Draw the picture and you will see what happens to the shadow when the rays are parallel. -
I really need your help with some calculations
Genady replied to tmdarkmatter's topic in Astronomy and Cosmology
1 metre, 2 metres, 10 metres, assuming the shadow is perpendicular to the light ray. -
A different way of looking at the trampoline analogy
Genady replied to geordief's topic in Relativity
You are spoiling my question in the post right above yours ... 😉 -
A different way of looking at the trampoline analogy
Genady replied to geordief's topic in Relativity
The main problem with the trampoline analogy is that it has nothing to do with the gravity related spacetime curvature. A curious student should ask after watching it, "How can the tracks of a ball and of a bullet be curved so differently if that curvature arises from the geometry of space?" (MTW, Gravitation (p. 32).) -
No, I am not interested in this distinction. Sorry that what I said or how I said it sounded like this distinction is of any importance to me.
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One might say whatever one wants.
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This analogy doesn't work because a particle does not extend into its field in QFT, but rather it is its field when the latter is not in the ground state.
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This is the difference in our approach: I think that my consciousness is a symbolic reflection of my experiences. The experiences, including thoughts and concepts, are not conscious.
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My consciousness records these experiences.
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Yes, its functioning changes. And sometimes stops.
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Consciousness does not have amount or direction. It is a symbolic system of recording experiences.
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In spite of this, a 'causative relationship' exists operationally, i.e., we can, in principle, manipulate the source and this would affect geometry, but there is no way to manipulate geometry without manipulating the source. The 'symmetry' is broken.
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Not for you, but for me
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Does it mean day / month / year?
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This is my experience as well.
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The answer is here:
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Restaurant food (split from Heat Regulation - Obesity)
Genady replied to Michael McMahon's topic in The Lounge
is horrible. -
Similar effect allows bacteria to withstand much higher osmotic pressures than eukaryotic cells. In this case, it is the line-square rather than the square-cube law. When you decrease the size by a factor, the ability of a membrane to withstand tear decreases by that factor while the tearing force decreases by the factor squared. Thus, a bacterium that is 100 times smaller than a regular cell can withstand 100 times higher osmotic pressure.
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Spacetime curvature is associated with radiation. The latter does not have mass.