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Jagerber48

Atomic Physicist

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Top Questions
34 votes

Proof that $\text{det}(AB) = \text{det}(A)\text{det}(B)$ without explicit expression for $\text{det}$

linear-algebra matrices eigenvalues-eigenvectors determinant matrix-decomposition asked Dec 6, 2021 at 5:46
math.stackexchange.com

23 votes

Why, in low energy situations like atomic physics, are massive particles found to be in integer number states?

quantum-mechanics nuclear-physics atomic-physics superposition discrete asked Oct 3, 2022 at 12:10
physics.stackexchange.com

19 votes

How did Ptolemy know that days were unequal lengths?

astronomy ancient-greece time ptolemy asked Mar 24 at 4:03
hsm.stackexchange.com

18 votes

Lindblad equation for Heisenberg operators?

density-operator open-quantum-systems asked Sep 16, 2016 at 4:23
physics.stackexchange.com

11 votes

Can the wavefunction be inferred from the expectation values of operators?

quantum-mechanics hilbert-space operators mathematical-physics quantum-states asked Sep 9, 2022 at 3:42
physics.stackexchange.com

9 votes

Raising and Lowering Indices of Levi-Civita Symbols (+---) metric?

special-relativity metric-tensor tensor-calculus notation asked Nov 12, 2016 at 22:57
physics.stackexchange.com

8 votes

Lindbladian and Dynamical semigroups

quantum-mechanics density-operator open-quantum-systems asked Sep 15, 2018 at 3:32
physics.stackexchange.com

8 votes

Coordinate free definition of $\nabla$ operator

differential-geometry notation vectors asked Jul 21, 2018 at 5:12
math.stackexchange.com

7 votes

How can zero-point energy have any measurable effect when it is just a constant offset to the Hamiltonian?

quantum-mechanics energy harmonic-oscillator hamiltonian vacuum asked Feb 12, 2021 at 18:27
physics.stackexchange.com

7 votes

Are spinors intrinsically nonlocal?

differential-geometry vectors spinors geometry non-locality asked Dec 11, 2022 at 19:35
physics.stackexchange.com

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Top Answers
105
What reference clock is an atomic clock measured against?
physics.stackexchange.com

51
Why is the length of the Kelvin unit of temperature equal to that of the Celsius unit?
physics.stackexchange.com

50
How can a rainbow be so steady, even though the droplets causing it can be in such different states?
physics.stackexchange.com

37
What's the difference between a microphone and a barometer?
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27
What are the most precise measurements in science?
hsm.stackexchange.com

21
Fourier transform standard practice for physics
physics.stackexchange.com

19
Term for a technique intended to draw criticism to an opposing view by overstating that view as your own (often emphatically)
english.stackexchange.com

16
Quantum and classical physics are reversible, yet quantum gates have to be reversible, whereas classical gates need not. Why?
physics.stackexchange.com

15
Thermal de Broglie wavelength - definition
physics.stackexchange.com

14
What technology is needed for an individual to reproduce the current SI meter and kilogram from scratch?
physics.stackexchange.com

13
"True" quantum-mechanical description of the hydrogen atom
physics.stackexchange.com

13
How to deduce existence of photons by applying quantum mechanics to Maxwell's equations
physics.stackexchange.com

12
If we had just invented the first clock, and we only had a calendar system, how would we set the time of day for the first time?
physics.stackexchange.com

11
How to get the operator in Dirac bra-ket notation?
physics.stackexchange.com

11
Why does dividing a vector by its magnitude produce a unit vector?
math.stackexchange.com

10
Raising and Lowering Indices of Levi-Civita Symbols (+---) metric?
physics.stackexchange.com

10
What do clocks measure?
physics.stackexchange.com

10
Superposition principle forbids quantisation?
physics.stackexchange.com

10
Why is wave function collapse mysterious?
physics.stackexchange.com

9
Mathematica vs. MATLAB philosophy
mathematica.stackexchange.com

9
Python generating a list of dates between two dates
stackoverflow.com

9
Is the Heisenberg-picture commutator $[x(t),p(t)]$ between position and momentum always equal to $i\hbar$?
physics.stackexchange.com

9
Why does the wave velocity of EM signals in a wire depend on the insulator's permittivity?
physics.stackexchange.com

9
Is the many-worlds interpretation really just an interpretation?
physics.stackexchange.com

8
What does the qualifier NOMINAL exactly refer to?
physics.stackexchange.com

8
Why does dividing a vector by its magnitude produce a unit vector?
physics.stackexchange.com

7
Provability of the provability or unprovability of QM interpretations
physics.stackexchange.com

7
"Conservation of energy, or lack thereof," in quantum mechanics
physics.stackexchange.com

7
What does a.u. mean as unit (not astronomical unit) in graphs in physics publications?
physics.stackexchange.com

7
Is the term "quantum fluctuation" an aide to understanding?
physics.stackexchange.com

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