Can gravity be explained by the concentration of energy rather than mass?

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Discussion Overview

The discussion revolves around the concept of gravity and its potential explanation through the concentration of energy rather than mass, drawing from ideas in string theory and relativity. Participants explore theoretical implications, personal interpretations, and the challenges of understanding advanced physics concepts.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification
  • Technical explanation

Main Points Raised

  • One participant suggests that gravity may be influenced by the concentration of mass/energy affecting gravitons, rather than the mass itself bending spacetime.
  • The idea is proposed that a dense concentration of energy could create a local gravity field independent of Earth's gravity, potentially allowing for massless travel.
  • Another participant questions fundamental concepts such as the nature of gravitons and the specifics of string theory, indicating a need for clarity on these topics.
  • Several participants express uncertainty about their understanding of string theory and its mathematical foundations, acknowledging their amateur status in physics.
  • There is a suggestion that a solid background in various areas of physics is necessary to comprehend string theory and related concepts fully.

Areas of Agreement / Disagreement

Participants express differing levels of understanding and familiarity with string theory and gravity. There is no consensus on the validity of the initial hypothesis regarding gravity and energy concentration, and the discussion remains unresolved.

Contextual Notes

Participants acknowledge limitations in their knowledge of physics, particularly regarding advanced topics like string theory, relativity, and quantum mechanics. There are references to the complexity of the subject matter and the prerequisites needed for a deeper understanding.

Who May Find This Useful

Individuals interested in theoretical physics, particularly those exploring concepts in string theory and gravity, may find this discussion relevant.

dolsen
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So after watching the tv show titles "Elegant Universe" narrated by Brian green. and after reading his book with the same name among other books of similar interest, I've had a brain storm. According to M-theory strings are opened ended strings that are connected to the universe at each end as they vibrate. gravity however is the only string, according to m-theory, that is a closed loop string able to traverse our brane of our 3dimensional universe. So i was thinking about relativity and how it says that the solar bodies bend the space time. What i have come to think is that maybe the accumulation of matter in space does not bend space time. What if the concentration of mass/energy affects gravitons and its that bends space and time not the matter. think of it like air pressure on a body in the atmosphere. Sort of explains why close to large bodies gravity is most powerful. Now to throw something into the gears, can we create a dense concentration of energy to create a local gravity field that is independent from Earth's. in other words can we make a "craft" appear massless in reference to Earth's gravity for travel purposes.
 
Physics news on Phys.org
what are gravitons??
what to you mean by a vibrating string?
what is vibrating on the string?
why string theory (old one) requires 26 dimensions?
what are the equations of motion governing a classical string?
etc etc...


etc etc...
 
gravity

huh. i guess one would have to read about or watch a show about quantum theory in order to know what strings are. i don't know exactly the mathematical equations defining strings or matter. I'm not a physicist, just someone interested in the field. I just through out this idea of my based on what i have learned about string theory and gravity and the universe. So i guess it is possible that what i wrote just might be nothing more than a random collection of familiar words that deal with physics. I thought someone that does know what i am talking about would have some sort of useful input.
 
Not that i know any much physics(im just an amteur like you)
but i think you learning string theory is going to take a really really long time
try strating with zweibachs textbook its supposed to be for undergrads
but even that is a tough read.I stopped reading it because i realized i need to have a proper background in other areas of physics like sp rel,part physics ,classical and quantum field theory etc...
 
Most string texts require about 2 years [working knowledge] of study in calculus, relativity and quantum mechanics to be comprehensible.
 

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