- #1
sqljunkey
- 181
- 8
Does spacetime have elasticity ? I was reading this and they are talking about the stiffness of spacetime.
Last edited:
Spacetime is not a "thing" that can be bent or stretched, or have stiffness or elasticity, it is just geometry. We use the term "bent" regarding the path of objects through space-time but that is only by applying Euclidean Geometry, which actually does not apply. Objects, in the absence of other force, travel in straight lines in space-time, but these "straight lines" are more correctly called "geodesics" and are straight lines in Riemann Geometry (but bent in Euclidean Geometry) which is the correct math to describe space-time.sqljunkey said:Does spacetime have elasticity ? I was reading this and they are talking about the stiffness of spacetime.
Spacetime is stiff upon first derivatives then gets stretchy at 2nd derivatives.sqljunkey said:Does spacetime have elasticity ? I was reading this and they are talking about the stiffness of spacetime.
dsaun777 said:Spacetime is stiff upon first derivatives then gets stretchy at 2nd derivatives.
sqljunkey said:I was reading this and they are talking about the stiffness of spacetime.
sqljunkey said:Does this speculative model have a name?
The concept of elasticity in relation to spacetime refers to the ability of spacetime to bend and stretch in response to the presence of matter and energy. This is described by Einstein's theory of general relativity, which states that massive objects cause spacetime to curve, creating the force of gravity.
The stiffness of spacetime, or its resistance to bending, affects the movement of objects by determining the path they take in the presence of gravitational forces. Objects will follow the curvature of spacetime, which can be influenced by the stiffness of the spacetime itself.
According to general relativity, the stiffness of spacetime is a constant and cannot be changed. However, there are theories that suggest that the stiffness of spacetime may vary in different regions of the universe or under extreme conditions, such as near black holes.
The stiffness of spacetime is measured using mathematical equations and observations of the effects of gravity on objects. General relativity provides a framework for calculating the curvature of spacetime and determining its stiffness.
If the stiffness of spacetime were to change, it could have significant implications for our understanding of gravity and the behavior of objects in the universe. It could also potentially impact our ability to accurately predict and model the movements of celestial bodies.