Questions tagged [terminology]
Use this for questions relating to the proper use of physics terminology or nomenclature.
91
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What is the proper term for the linear, surface area, and volume components in density equations?
Say one is looking at charge density. Linear charge density would be given by
$$
\lambda = \frac Q \ell
$$
surface charge density would by given by
$$
\sigma = \frac Q A
$$
and volume charge density ...
- 329
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What is a hypersurface?
What is the concept of hypersurface in general relativity? I know it could be characterized into three categories but how do we define hypersurface (in general) in physics? I didn't get what thing it ...
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If we change the direction of the connections in a step-down transformer, will it become a step-up transformer?
If we change the direction of the connections in a step-down transformer, will it become a step-up transformer?
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Is Retardation and Deceleration the same thing? [closed]
Does, Deceleration always have to be Retardation? Or, can there be Deceleration without Retardation.
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31
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When does a theory decouple?
The question is very broad, but it seems to me that the term 'to decouple' is also used in various contexts. For example, neutrinos decouple from the photons in the early Universe, when the ...
- 938
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Difference between - & [closed]
I’m taking Introductions to Physics book. In the book on the chapter “Physics & Mathematics” there was one question where we were supposed to find the magnitude of work done from given vectors ...
user380217
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1
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Can you have a charge of 0 C?
My textbook says that there are only two types of charges: positive and negative. Then would it be correct to say that the neutron (for instance) has charge $0\ \rm C$?
- 100
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What is difference between normal force and reaction force? [duplicate]
according to my book the perpendicular component of reaction force is called normal force when there is contact between two bodies. I can not understand that how for example when we jump we pushes the ...
user379089
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What is normal force and when it acts?
what are contact forces and according to: https://www.physicsclassroom.com/class/newtlaws/Lesson-2/Types-of-Forces
it says there are 6 types of contact forces. I am having doubt with applied force and ...
user379089
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2
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355
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What is a parent Hamiltonian? [closed]
The term is used throughout the literature but I was not able to find a definition or even a paper properly introducing the term. What does a Hamiltonian have to satisfy to be a parent Hamiltonian?
An ...
- 808
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What is an example of a contact force that is not a normal force?
I have a question about contact force and normal force.
whenever two bodies are in contact and one body tries to push another body there will be a normal force acting between them. like when we push ...
user379089
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Contact terms in Schwinger-Dyson equation and Ward-identity
I am reading Weigand's notes for the derivation of Ward-identity.
The Second last paragraph on page 133, says the following statement
"The Schwinger-Dyson equation and the Ward-identity show ...
- 69
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88
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Is this motion rotation or curvelinear translation?
Arrow orbit around point C like graph show.
Is motion of arrow, rotation or curvelinear translation according to physics definition?
What is definition and types of translation and rotation?
I find ...
- 613
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94
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What is the verb for plasma formation?
Simple question: what is the verb for the phase change from gas (or any other "regular" state of matter) to plasma? The best thing I can think of is "ionization into a plasma" but ...
- 101
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Dust solutions in general relativity
What is the precise definition of a dust solution in general relativity?
If the Einstein tensor of a metric has only the first diagonal term non-zero, it that sufficient for that solution to be called ...
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