Mass/energy as a condition of spacetime

FayeKane
Messages
31
Reaction score
0
Mass/energy as a "condition of spacetime"

I recently read somewhere (I think here) that mass is not something you "drop into" space, rather it's a condition of space, and that gravity waves are also a "condition of space".

a) is this correct?

b) If so, is it more generally correct to say that mass/energy is a "condition of spacetime", and specifically that the invariant-mass component is a condition of space, while the energy component is a condition of time?

c) if question b) is in fact meaningless, is there a way to rephrase the statement "mass is a condition of space" so that it that it involves time as well as space?

I forget whatever you call relativistic mass minus invariant mass because I'm Alzhammered.

--flk
 
Physics news on Phys.org


FK,

I wish you remembered where you read the observation on mass/energy/gravity/space. I would like to read it.

Space is the bete noir of relativity theoretics.

1. The physical characteristics of actual space are never well defined.
2. All references to relativity space are abstractions, i.e. imaginary geometries.
3. To conceal this fundamental flaw in the corpus of relativity theoretics, a sleight of hand, spacetime is used exclusively.
4. Mass/energy/gravity are trivial without a well articulated definition of actual space.

To answer your question both mass & energy are fundamentally related to space. Time is an abstraction.

Thanks for an insightful post,

d
 
Thread 'Can this experiment break Lorentz symmetry?'
1. The Big Idea: According to Einstein’s relativity, all motion is relative. You can’t tell if you’re moving at a constant velocity without looking outside. But what if there is a universal “rest frame” (like the old idea of the “ether”)? This experiment tries to find out by looking for tiny, directional differences in how objects move inside a sealed box. 2. How It Works: The Two-Stage Process Imagine a perfectly isolated spacecraft (our lab) moving through space at some unknown speed V...
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. The Relativator was sold by (as printed) Atomic Laboratories, Inc. 3086 Claremont Ave, Berkeley 5, California , which seems to be a division of Cenco Instruments (Central Scientific Company)... Source: https://www.physicsforums.com/insights/relativator-circular-slide-rule-simulated-with-desmos/ by @robphy
In Philippe G. Ciarlet's book 'An introduction to differential geometry', He gives the integrability conditions of the differential equations like this: $$ \partial_{i} F_{lj}=L^p_{ij} F_{lp},\,\,\,F_{ij}(x_0)=F^0_{ij}. $$ The integrability conditions for the existence of a global solution ##F_{lj}## is: $$ R^i_{jkl}\equiv\partial_k L^i_{jl}-\partial_l L^i_{jk}+L^h_{jl} L^i_{hk}-L^h_{jk} L^i_{hl}=0 $$ Then from the equation: $$\nabla_b e_a= \Gamma^c_{ab} e_c$$ Using cartesian basis ## e_I...

Similar threads

Back
Top