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"I would never die for my beliefs because I might be wrong."

-- Bertrand Russell


Jan
27
comment Is Dr Quantum's Double Slit Experiment video scientifically accurate?
Maybe you could explain to me what the delayed choice quantum erasure changesto the problem? Because just saying it makes a difference doesn't quite cut it.
Jan
3
awarded  Nice Answer
Jan
1
comment Why is quantum entanglement so important?
I'm sure you're right about what he had in mind. But that should not be for us to guess.
Dec
30
comment Why is quantum entanglement so important?
Unfortunately, your example is not an example of entanglement. It's not even clear to me there are correlations involved. Antiparallel spins can be represented as: $|\uparrow\downarrow\rangle$.
Dec
9
awarded  Constituent
Nov
26
awarded  Caucus
Nov
12
awarded  Yearling
Oct
26
comment When and how do you represent a two body state as a tensor product?
@Jim: Does this help? The tensor product $L^2(\mathbb{R}^3)\otimes L^2(\mathbb{R}^3)$ is isomorphic to $L^2(\mathbb{R}^3\times\mathbb{R}^3)$. And the cartesian product is $\mathbb{R}^3\times\mathbb{R}^3=\mathbb{R}^6$.
Oct
15
revised Schrödinger equation with complex potential
deleted 7 characters in body
Oct
14
comment The equation of a ferrofluid under a magnetic field?
You won't need the full Navier-Stokes equations since the problem is static. Neither will you need the full Maxwell equations. That should simplify the problem a lot. You'll also need equations describing the interaction between the ferrofluid and the field.
Sep
24
comment Can we have discontinuous wavefunctions in the Infinite Square well?
It probably makes sense if you extend the meaning of the Schrödinger equation in terms of distributions.
Sep
15
awarded  Pundit
Sep
13
comment Calculation of Distance from measured Acceleration vs Time
If you are only interested in vertical displacement, you only need vertical acceleration as well. Can you show us what you did?
Sep
4
comment 3 inertial frames compared in STR
No, $(x_1, t_1)=(x_2, t_2)=(x,t)$.
Sep
1
comment Would it be possible to develop special relativity without knowing about light?
It's easy to imagine. A blind man can use a radio to communicate. But radios transmit signals using the electromagnetic spectrum. So even an observer who can only detect things via sound would eventually discover that the true "speed limit" is the speed of light.
Sep
1
comment Would it be possible to develop special relativity without knowing about light?
We are insensitive to most of electromagnetic raditation. In fact, it took us quite some time to realize that visible light is just a manifestation of electromagnetism. Most of the electromagnetic spectrum is detected by specific instrumentation. If that species can develop a science, I don't see any reason why it could not develop those tools. It would only take the realization that some energy is going somewhere they don't "see".
Aug
31
awarded  Nice Answer
Aug
25
comment Is it the act of measuring a quantum particle that causes it to lose its uncertainty?
How will you check that you correctly inferred the location of the particle?
Aug
21
comment Shor's algorithm and Bohmian Mechanics
I didn't realize 't Hooft made a thread here. Is he the real deal? ;P Great, I'm off to read that one!
Aug
16
comment Is dark matter really present around the sun?
Fair enough, I think every statement about dark matter should really be preceded by "we think that..." or "it is hypothesized that...".