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age 21
visits member for 2 years, 6 months
seen 1 hour ago

Mar
19
reviewed Reject Is play-dough liquid or solid?
Mar
19
reviewed Reject Is there an intuitive explanation for the Southward force caused by the Coriolis Effect on rotating spheres?
Mar
18
comment Insight into Torricelli's Equation ($v^2=u^2+2as$)
@pdmclean so that's the meaning of Torricelli's equation! It is an expression of conservation of energy and what it shares in common with Torricelli's law is that they were both formulated by the same person.
Mar
18
answered Insight into Torricelli's Equation ($v^2=u^2+2as$)
Mar
17
comment Water Waves in the Wake of a Boat
I don't think this is the case. Ex. i.stack.imgur.com/PaSas.jpg seems to have no asymmetry and the lines of constant phase (or maximums if you prefer) still bend outwards!
Mar
17
reviewed Reject How do I represent $A$ transpose $A$ in indicial notation?
Mar
16
comment wave equation for a homegeneous prism object
In the 3 dimensional case, any serious book on optics shohuld include it. The key topic here is the Fresnel equations: en.wikipedia.org/wiki/Fresnel_equations keep in mind these equations are for solving the wave equation in three dimensions. The two dimensional case will be simpler.
Mar
15
reviewed Reject Do photons have acceleration?
Mar
15
comment Is there any theoretical limit to the distance at which particles can remain entangled?
1. there is no theoretical limit to the distance at which particles can remain entangled. 2. Quantum entanglement cannot be used for instant communication at a distance.
Mar
14
comment Why 'Force x displacement', and not momentum to measure energy?
relevant: en.wikipedia.org/wiki/Vis_viva#History
Mar
13
comment How can shadows ever be sharp?
The short answer (ignoring Huygens principle and thinking of light like waves on a pond) is that frequencies of $10^4$ Hz end up being a totally different ball game than frequencies of $10^{14}$ Hz.
Mar
12
comment Commutativity and symmetric property in tensor manipulation
watch your upper and lower indices! It's also not true it equals $1$. See property 18 on mathworld.wolfram.com/MetricTensor.html
Mar
12
revised Commutativity and symmetric property in tensor manipulation
added 353 characters in body
Mar
12
answered Commutativity and symmetric property in tensor manipulation
Mar
11
answered Quantum Mechanincs - Dirac notation and solving time dependant schrodinger
Mar
9
reviewed Approve I wasn't able to find a good resource for Bipartite state and Bell's theorem
Mar
9
reviewed Approve Is it possible to “see” atoms?
Mar
9
reviewed Approve Is it possible to “see” atoms?
Mar
9
comment Ising model Monte Carlo simulations in 4D and 5D
To prove user37496's statement, consider choosing three axes from your set of four axes. Three defines a volume, so the number of (N-1)-hyperplanes mutually perpendicular passing through a point is $N$ choose $N-1$, that is, $N$.
Mar
7
comment Curl of Electrostatic Field
It's not true that an integral being zero means that the integrand is zero, but generally if an integral is zero for ANY domain, then the integrand is zero. So I feel like your answer isn't good.