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Attraction, Gravitation and some doubts

“In universal law of gravitaion what is  the word “attraction” actually refers to?
I am already on the earth surface and attached to it.Then what is the meaning that earth still attacting me accounts for.
Does that mean earth want me to attarct me towards its center point (ie.., into the inner core of the earth’s interior).
Please answer I am puzzled and worried about my analysis.

Explain with reasons…”

 

Asked Gopi Krishna

 

Answer:

 

Earth's Core

 

Yes, Earth continues to attract you until you reach its centre.

 

Every body attracts all other objects towards its centre, not to its surface!

 

Space Time

First, I am a physics ‘hobbyist’; I have only rudimentary (read college classes) in physics and I absolutely recognize that I know very little about the subject except what I have studied and can find online.  However, I have a theory that the flow of time causes space in much the same way that the flow of electricity causes magnetism (the ‘right hand thumb rule’, for example).  This would explain the supposed curvature of space since it would flow in a circular motion nn degrees against the flow of time.  This idea could explain, in a way, the faster-than-light expansion of space nanoseconds after ‘The Big Bang’ since it wasn’t space that exploded but rather time that exploded meaning time ‘flowed faster’ immediately after the big bang causing a massive, near instantaneous expansion of space at that time.  (As you can see, I have far too much ‘time’ on my hands…)  The problem I have – and hope someone can answer – is that I can think of no way to prove or disprove this experimentally; not so much my ancillary thoughts of time and the big bang but rather if time causes space, how can this be disproved or proved experimentally?

 

Asked Kenneth R. Guilstorf

 

Entropy

The latest thinking about black holes is that they may not collapse into a singularity at all, but may actually explode back with  a “big bounce” once the diameter of the black hole reaches the Planck Scale or maximally compact state and once the “big bounce” diameter expands to that of the event horizon, it would release all of the information that till then had been trapped inside the black hole, back into the universe.

My question is this, if in fact the “big bang” that led to the creation of our current universe was the result of the “big bounce” associated with the collapse of a prior universe, is there any measure of entropy that could detect this. In other words would any measure of entropy differ between the universe caused by “big bounce” n and the universe caused by “big bounce” n+k?

 

John Egenolf Asked

 

The question is left for the visitors to answer

 

Are all theories of Physics based on a mathematics … ?

Are not all theories of physics (general relativity, quantum mechanics and other variations) based on a mathematics of structure? An assumption that the model and its constituents have structure? Structure that assumes space as a necessary, though maybe not formalized component?

English: Quantum black hole Русский: Квантовая...

Could it be that during a black hole collapse that ALL structure is lost? All space is eliminated.  There is no space, only mass/energy?

Posted by Richard

The curvature of earth and a metal pipe!

I’ve been wondering about the following issue for the past few days, let’s assume all terrain on earth is plain, we have infinite supply of straight pipe sections we can assemble into a very straight long pipe all over the equator, if we observe a small part of the pipe let’s say, 10 or 100 meters it would appear straight, but as a whole, would it continue to be so straight that it would form an increasing angle with the surface as the planet’s surface becomes curved? Or would the pipe become ring along the planet? and in this case, how could it become a ring if it’s all straight pieces of rigid metal pipe? because of the curvature of space due to gravity? or because long things tend to bend in proportion to how narrow or thick they are respect to the lenght?? English is not my mothertongue, I hope i made myself clear enought in depicting the esense of my question. Thank you.

 

Posted by Jesus Bitar

 

 

 

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