Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. It only takes a minute to sign up.

Sign up to join this community
Anybody can ask a question
Anybody can answer
The best answers are voted up and rise to the top

Top Questions

1 vote
1 answer
20 views

Can we think of spontaneous emission of a photon from an excited atom as a driven harmonic oscillator problem?

0 votes
0 answers
13 views

Decoherence via environmental photons

0 votes
1 answer
12 views

Reflection versus Refraction with Waves

0 votes
1 answer
47 views

How to derive II law of thermodynamics from Newtons II law?

0 votes
0 answers
24 views

KLEIN Paradox phenomena

1 vote
0 answers
21 views

Normalization of zero point energy in string theory

1 vote
0 answers
17 views

Did galaxies spin differently 4, 5, 6 billion years ago?

0 votes
0 answers
14 views

What is the connection between charge distribution and generalized functions

0 votes
2 answers
52 views

Intuition for $e^{i(px-Et)}$ rotating clockwise?

0 votes
1 answer
23 views

Magnets on parallel strings

0 votes
0 answers
32 views

Can you only jump upwards? [closed]

1 vote
0 answers
29 views

Noether's theorem for first-order systems

2 votes
0 answers
23 views

Reliability vs Accuracy vs Precision vs Validity

0 votes
0 answers
19 views

Perturbative decay of a rolling scalar field

1 vote
1 answer
19 views

Is the massive Fierz-Pauli action invariant under changes of coordinates?

2 votes
2 answers
67 views

How damping constant of pendulum varies with length of wire? (experiment result confusion)

0 votes
0 answers
24 views

Fourier decomposition chain of particles [closed]

2 votes
0 answers
17 views

Asymptotic symmetry and Conserved charges in presence of radiation

0 votes
0 answers
30 views

Can this describe an oscillating eternal universe without singularity?

0 votes
1 answer
28 views

Physical properties of a field that is both solenoidal and irrotational [duplicate]

0 votes
0 answers
25 views

Compound pendulum - understanding torque of elastic force [closed]

4 votes
3 answers
344 views

Does a double star system have more mass than its constituents?

0 votes
2 answers
28 views

Impact force of object

0 votes
0 answers
54 views

Derivation of covariant derivative

4 votes
2 answers
45 views

Can red and blue light interfere to make fringes in young’s double split experiment?

1 vote
2 answers
47 views

Undefined Velocity at a certain time [closed]

0 votes
1 answer
48 views

Is there an axiom for degenerate (or continuous) quantum collapse?

2 votes
1 answer
19 views

An equation that explains the relationship between the sound strength and medium pressure

1 vote
3 answers
66 views

How the potential energy of the dipole is $m.\vec{B}$ when work done by any magnetic field is Zero?

-2 votes
2 answers
51 views

How are the orbitals named?

0 votes
0 answers
25 views

Predicting Phase Diagram from Parameters [closed]

0 votes
1 answer
31 views

Eigenvalue of transfer matrix in Shankar (3.3.4), p.34

3 votes
2 answers
95 views

Does the wavelength of a sound change from one medium to another?

7 votes
7 answers
1k views

Why is the current the same after passing through a resistor even when the drift velocity goes down?

-1 votes
2 answers
65 views

Can an object only have kinetic energy? [closed]

0 votes
3 answers
65 views

Which QM interpretations support determinism? [closed]

0 votes
0 answers
21 views

What is the microscopic physics of DC voltage propagation?

0 votes
1 answer
45 views

Why is the commutator of ladder operators non-zero?

1 vote
3 answers
91 views

I don't understand why combustion releases energy?

0 votes
3 answers
40 views

Quantum angular momentum addition of two particles

0 votes
1 answer
25 views

Microscopic explanation of potential drop in resistors

1 vote
1 answer
50 views

Do the other 3 fundamental forces also warp space-time?

0 votes
1 answer
38 views

Finding reduced mass equation [closed]

2 votes
1 answer
40 views

Charge distribution in a current carrying wire

1 vote
0 answers
14 views

How do the vacuum bubbles cancel out in gell-mann-low formular? [duplicate]

0 votes
2 answers
28 views

The direction of induced electric field around a changing current wire


Looking for more? Browse the complete list of questions, or popular tags. Help us answer unanswered questions.