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bio website arXiv.org
location Europe
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visits member for 3 years, 4 months
seen 39 mins ago

I'm a theoretical physicist.


13h
comment Quantum Mechanical States
@MBN: Right. OP (in v4) is possibly talking about the dimension of the Hilbert space. But a Hilbert space could be finite dimensional.
13h
comment What are the linear maps which preserve the time-like cone?
Suggestion to the question (v1) echoing @V.Moretti's comment: Replace $GL(4, \mathbb R)$ with $M(4,\mathbb R)$.
18h
comment Relation between component and algebraic definition of covariant vectors
Cross-posted from math.stackexchange.com/q/869877/11127
18h
comment Interpretations of (r,s) tensors
Cross-posted from math.stackexchange.com/q/883510/11127
19h
comment What will happen if a plane trys to take off whilst on a treadmill?
See also the xkcd blog.
19h
comment Airplane on a treadmill
Possible duplicate: physics.stackexchange.com/q/32269/2451 and links therein.
21h
comment How to restore the potential energy?
Hi Dmitry. Please don't repost a closed question in a new entry. Instead, you are supposed to edit the original question within the original entry.
23h
comment How to find the potential energy?
Hi Dmitry. Please don't repost a closed question in a new entry. Instead, you are supposed to edit the original question within the original entry.
1d
comment F-mu-nu notation
Hi @Smik Games: Welcome to Phys.SE. Comments to the post (v3): That's 3 questions. Please remove the questions you already know the answers to. Ask one and only one question, and perhaps provide some context for your question.
1d
comment Conditions for hyperregularity
Comment to the question (v1): M&R also consider infinitely many $q^{i}{}^{\prime}$s. Are you only interested in the finite-dimensional case?
1d
comment Classification of a Comet
Cross-posted from astronomy.stackexchange.com/q/5921/476
1d
comment Does the universe have an edge/boundary/barrier? If yes, what is at the edge?
Related question on Astro.SE: astronomy.stackexchange.com/q/5960/476
2d
comment How to detect if a beverage has Sucralose or aspartame?
Would Chemistry be a better home for this question?
2d
comment How much more efficient is a road bike than a mountain bike?
Related: bicycles.stackexchange.com/q/1505 , bicycles.stackexchange.com/q/12947 and links therein.
2d
comment Find electric field given the magnetic field
Hi user108605. Please don't repost a closed question in a new entry. Instead, you are supposed to edit the original question within the original entry.
2d
comment Why there does not exist any Gravitational Magnetic Field?
Related: physics.stackexchange.com/q/944/2451 , physics.stackexchange.com/q/11096/2451 , physics.stackexchange.com/q/15990/2451 , physics.stackexchange.com/q/54942/2451 and links therein.
2d
comment Obtain the electric field
Hi user108605. Welcome to Phys.SE. Please don't repost a closed question in a new entry. Instead, you are supposed to edit the original question within the original entry.
2d
comment Sound Interference Practical
Hi grey taco. Welcome to Phys.SE. If you haven't already done so, please take a minute to read the definition of when to use the homework tag, and the Phys.SE policy for homework-like problems.
Jul
28
comment Difference between weight of water and pressure of water
Hi @VividV: Concerning your latest edits: We appreciate your clean-up effort, but try to limit edits of old questions to only a handful at the time not to clog the front page, and try to make every edit count, i.e. as substantial as possible. Minor edits should be avoided.
Jul
28
comment calculate force between two magnets
Hi Roberto. Welcome to Phys.SE. If you haven't already done so, please take a minute to read the definition of when to use the homework tag, and the Phys.SE policy for homework-like problems.