Equivalence Definition and 721 Threads

The equivalence principle (EP) - which is the basis of general relativity – states that you cannot distinguish between an object’s behaviour in a uniform gravitational field from that in a uniformly accelerating frame. If light travels vertically in a gravity field it loses or gains energy, and...

I am going to try to explain relativity without light or maxwell's equation. Light or Maxwell's equation or electromagnetism has nothing to do with relativity. a) The speed of light (and not light itself - note the difference) has something to do with it. b) The fact that M&M used light...

One question for now: 1. If C is a full subcategory of D and D is a full subcategory of C, what can be said, if anything, about C and D being either equal or equivalent in some way?

I posted this in general physics, but I didn't get an answer, so I'll try again here: Einstein's theory of general relativity was motivated by his equivalence principle, that no experiment can distinguish between an accelerated frame and a still frame under the influence of gravity. But if...

the graviton and einstein's equivalence principle Einstein's theory of general relativity was motivated by his equivalence principle, that no experiment can distinguish between an accelerated frame and a still frame under the influence of gravity. But if the gravitational force is mediated by...

I was thinking just a moment ago and fragments of random knowledge and ideas gathered to make this question... If I remember my college physics class correctly, an evidence of the mass-energy equivalence is that in an atom, the sum of the rest masses of the nucleons is greater than the rest...

Hi I just wanted to know what a qoutient space is . Is there a physical picture to it? How can one imagine what an equivalence class,equivalence relation is?

The Equivalence Principle--bending of light Hi everyone! I have learned the general relativity, but I have a few problems which I don't understand. Can someone help me? I am recently learning the Equivalence Principle and the bending of light. I have read the following paragraphs in a...

Hi ppl, I was wondering. I have found the Equivalence point from the graph of volume versus pH for a given titration. To determine the Half equivalence point for to calculate Pka=Ph, do I half the pH or the volume which I found for the Equivalence point initially? Thanks for any help, Joe

The Eotvos type experiments test the equivalence principle by comparing the inertial accelerations of bodies of different compositions within a gravitational field. In short they test whether feathers and cannon balls fall at the same 'rate'. But has anybody tested whether particles and...

i have some doughts regarding the principle of equivalence.we have seen that the inertial mass and gravitational mass are same.now consider the nucleus where in nucleons are binded due to which there wiil be mass reduction,this is inertial mass.then how come there is decrease in gravitational...

derivation of general relativity Can the theory of general relativity be deduced without appealing to the ideas of special relativity? Quantum mechanics didn't need special relativity to come into existence even though QM eventually incorporated it.

It seems to me that Einstein's equivalence of gravitational acceleration and non-gravitational acceleration, when combined with his constancy of light speed in vacuuo, should yield a constancy of gravitational speed in vacuuo.

Being full of doubts I have some questions of the equivalence principle. 1. In the presence of gravitational fields the Einstein Equivalence Principle (EEP) is a necessary and sufficient condition for the Principle of Relativity, (PR). Here I summarise PR as the doctrine of...

The final conversatation between Doc Al and Russ_Watters in post 78 in the Speed of light thread went as: Reading this last post led me to question whether the conversation between Doc Al and Russ_Watters ought not be left unanalyzed. I had finished reading the entire thead earlier and began...

Is there any model to describe the mechanism that allows matter to be converted into energy? If a mass is suddenly converted into its energy equivalent what is the nature of this energy?

The Principle of Equivalence between inertial mass and gravitational mass used by Einstein to formulate his general theory of relativity is a prelude to another equivalence principle. This is the equivalence between a fundamental force and the geometry of spacetime. The forces used in this...

I am not exactly clear on what an equivalence relation. If A is a set, then a relation on A is a subset R. The relation R is an equivalence relation on A if it satisfies the reflexive property, symmetric property, and transitive property. What types of relations are we talking about. And when...

Hi, I am quite new to the concept of stochastic equations. I am learning of it from some financial textbooks, however they lack a bit in the approach. Let me see if i understood Feynman-Kac: for every PDE in N dimensions (with second derivatives equivalent by unitary/orthogonal...

Questions about functions: Let A be a set and let f: A -> A be a function. For x,y belongs to A, define x ~ y if f(x) = f(y): a. Prove that ~ is an equivalence relation on A. This is my guess, but I am not sure whether I'm right: Proving reflexiveness: If (x,y) belong to A, then f(x)...

Hello, I have a question regarding equivalence relations from my ring theory course. Question: Which of the following are equivalence relations? e) "is a subset of" (note that this is not a proper subset) for the set of sets S = {A,B,C...}. Example: A "is a subset of" B. Now...