Kostya

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special-relativity

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266

Do we know why there is a speed limit in our universe?

Jan 20, 2016

67

What is the difference between implicit, explicit, and total time dependence, e.g. $\frac{\partial \rho}{\partial t}$ and $\frac{d \rho} {dt}$?

Apr 26, 2011

50

Calculus of variations -- how does it make sense to vary the position and the velocity independently?

Jan 14, 2011

50

What is the usefulness of the Wigner-Eckart theorem?

Feb 8, 2011

46

Why does one experience a short pull in the wrong direction when a vehicle stops?

Feb 28, 2011

Questions

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Why correlation functions?

Jan 17, 2011

46

What is the status of Mpemba effect investigations?

Jul 27, 2012

40

Does a photon interfere only with itself?

Mar 2, 2011

38

How fast a (relatively) small black hole will consume the Earth?

Jan 12, 2011

34

"Velvet way" to Grassmann numbers

Feb 11, 2011

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special-relativity

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speed-of-light

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quantum-mechanics

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quantum-field-theory

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differentiation

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+10

What is the difference between implicit, explicit, and total time dependence, e.g. $\frac{\partial \rho}{\partial t}$ and $\frac{d \rho} {dt}$?

+10

Meaning of the Poisson bracket as a coordinate transformation

+10

Do we know why there is a speed limit in our universe?

+10

Does a photon interfere only with itself?

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