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rajeshmarndi
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If gravity is not a force, but a result due to curvature of spacetime. Then why does science trying to compare gravity with other forces.
rajeshmarndi said:Then why does science trying to compare gravity with other forces.
rajeshmarndi said:Then why does science trying to compare gravity with other forces.
Nugatory said:Do you have a reference to "science trying to compare..."? It's not clear exactly what you're asking, and without that it's hard to sensibly answer your question.
You may want to search this forum for some of the previous discussions on this topic. Also, take a look at the "Similar Threads" section at the bottom of this page.
Yes, that's right. Isn't gravity considered ,one of the four fundamental forces.stevendaryl said:I think that what he means is comparisons of the relative strengths of fundamental forces, such as shown on this page
http://scienceworld.wolfram.com/physics/FundamentalForces.html
The opinions may differ about how to call the cause of the unopposed motion of an object in a gravitational field; however, the force that is indirectly shown on a scale is not a matter of opinion, and it closely follows Hooke's law.rajeshmarndi said:Yes, that's right. Isn't gravity considered ,one of the four fundamental forces.
rajeshmarndi said:Yes, that's right. Isn't gravity considered ,one of the four fundamental forces.
nitsuj said:Now the question should still stand, why is gravity descriptively distinct from the other forces...errr...interactions. :)
I don't think so. Instead, I think that energy causes attraction towards energy containing bodies (called gravity) and time dilation. Isn't electric field energy, in addition to a source of electric attraction, also a source of gravity and time dilation?pervect said:That part is (I think) easy - no other "force" causes time dilation, but gravity does.
pervect said:That part is (I think) easy - no other "force" causes time dilation, but gravity does.
harrylin said:Gravity is the stripped down interaction, imo from it the other three should be described; not the other way around.
harrylin said:I don't think so. Instead, I think that energy causes attraction towards energy containing bodies (called gravity) and time dilation. Isn't electric field energy, in addition to a source of electric attraction, also a source of gravity and time dilation?
The electric field energy causes gravity. Gravity is experienced by a clock on Earth as a force; how could a force affect the frequency of atomic clocks?pervect said:Yes, the electric field is also generates gravity. But the electric field doesn't produce time dilation directly, it can cause time dilation only insofar as it produces gravity which then produces the time dilation.
pervect said:It's not quite philosophy. But the answer to this problem might suggest a different answer than the one I originally gave. You can tell an electric field from a "gravity field" because an electric field only affects charged objects.
One of the problems with defining a 'gravity field' is the fact that it affects everything, so you don't have any objects without "gravitational charge". Attempts to define a "gravity field" in the same manner as we do an electric field fail :(.
However, you can use the definition of an electric field as something that accelerates only charged objects to separate out the gravity generated by an electric field from the electric field itself. Using this separation, you can then say that the electric field is just a force, you don't get any time dilation effects no matter how large the electric force is, you can trace all the effects you get from the unavoidable inclusion of generated gravity to the gravity you've generated via the electric field.
Once more, I did not suggest otherwise; electric field energy is not an electric field! ;)pervect said:[..] You can tell an electric field from a "gravity field" because an electric field only affects charged objects.[..]
This statement refers to Albert Einstein's theory of general relativity, which states that gravity is not a force between masses, but rather a curvature of spacetime caused by the presence of massive objects. In other words, objects with mass cause a distortion in the fabric of spacetime, and this distortion is what we experience as gravity.
Newton's theory of gravity states that gravity is a force that acts between all masses in the universe. However, Einstein's theory of general relativity takes a more comprehensive approach by explaining gravity as a result of the curvature of spacetime, rather than a force acting between masses.
Einstein's theory of general relativity was developed through years of mathematical calculations and thought experiments. Einstein was inspired by the work of other scientists, such as Isaac Newton and James Clerk Maxwell, and used their theories as a basis for his own. He also conducted experiments and observed the behavior of objects in space to support his theory.
According to general relativity, the curvature of spacetime is directly related to the mass of an object. In the case of black holes, the immense mass of the object causes a significant distortion in the fabric of spacetime, resulting in a strong gravitational pull that even light cannot escape. The bending of light, or gravitational lensing, occurs because the path of light is influenced by the curvature of spacetime around massive objects.
Yes, there is a significant amount of evidence to support Einstein's theory of general relativity. One of the most famous examples is the observation of the bending of light during a solar eclipse, which confirmed the prediction of general relativity that massive objects can bend the path of light. Other evidence includes the precise measurements of the orbits of planets in our solar system and the behavior of objects in the vast reaches of space.