User Constantine Black

7 votes

Accepted

What makes an orbit stable or unstable?

answered May 13, 2015 at 11:21

4 votes

How does the heat of Sun come on Earth when there is no medium?

answered Jun 13, 2015 at 16:37

4 votes

Transition probability derivation: How to prove $\lim_{\alpha\rightarrow\infty} \frac{\sin^2\alpha x}{\alpha x^2} ~=~\pi\delta(x)$?

answered Feb 27, 2016 at 20:13

4 votes

How to show invariance using the Maxwell tensor?

answered May 18, 2016 at 10:48

4 votes

What is behind the definitions of work and energy?

answered Aug 31, 2016 at 10:37

4 votes

How fast is information transferred between the two entangled particles?

answered Sep 6, 2017 at 18:24

4 votes

Why the unit vector is represented as a partial derivative in GR?

answered Dec 18, 2017 at 18:47

3 votes

Accepted

Fringe pattern in Lloyd mirror

answered Dec 17, 2017 at 8:50

3 votes

Why string theory?

answered Sep 1, 2016 at 8:35

3 votes

The difference between magnetic fields and electromagnetic radiation

answered Sep 8, 2016 at 9:30

3 votes

Accepted

How to determine whether a nuclear transition would be electric octupole, or hexadecapole?

answered Jun 4, 2015 at 17:14

2 votes

How does any vibrating object generate sound?

answered May 25, 2015 at 7:15

2 votes

Accepted

Showing existence of negative temperature for a quantum system

answered Apr 17, 2015 at 11:27

2 votes

What is the simplest way to prove that Earth orbits the Sun?

answered Apr 17, 2015 at 13:59

1 vote

Does a moving charge have additional (magnetic) energy

answered May 18, 2015 at 19:44

1 vote

Accepted

Question about particles in electric fields. Homework question

answered May 7, 2015 at 19:49

1 vote

How is the conservation of momentum satisfied in long-range attraction such as electromagnetism and gravity?

answered May 11, 2015 at 7:33

1 vote

Reflectivity of Metals - real and imaginary part of k-vector and complex dielectric function

answered May 25, 2015 at 7:37

1 vote

Is there any easy process that absorbs heat?

answered Jun 14, 2015 at 9:30

1 vote

Finding the wave function of a quantum harmonic oscillator

answered Jun 15, 2015 at 17:34

1 vote

Using rotation matrix for spin to write x oriented spin in z-spin basis

answered Jun 16, 2015 at 8:28

1 vote

Biological heat dissipation methods

answered Jun 19, 2015 at 12:47

1 vote

Accepted

Degeneracy split in $n=2$ hydrogen due to uniform electric field. Why is main diagonal zero?

answered Dec 15, 2017 at 18:58

1 vote

Direction of acceleration at highest point

answered Jun 7, 2015 at 13:16

1 vote

Proof of conservation of energy with the relativistic definition of force

answered Jun 25, 2015 at 17:16

0 votes

Force between two point charges moving parallel to each other

answered Jun 25, 2015 at 18:16

0 votes

What is the location of point charge with respect to the original charged body?

answered Feb 20, 2016 at 17:44

0 votes

Why doesn't steady flow of air create sound?

answered Feb 25, 2016 at 14:52

0 votes

Can pressure be negative?

answered Jun 10, 2015 at 17:48

0 votes

Why do objects appear smaller when farther away?

answered Jun 12, 2015 at 18:02

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40 Answers

What makes an orbit stable or unstable?

How does the heat of Sun come on Earth when there is no medium?

Transition probability derivation: How to prove $\lim_{\alpha\rightarrow\infty} \frac{\sin^2\alpha x}{\alpha x^2} ~=~\pi\delta(x)$?

How to show invariance using the Maxwell tensor?

What is behind the definitions of work and energy?

How fast is information transferred between the two entangled particles?

Why the unit vector is represented as a partial derivative in GR?

Fringe pattern in Lloyd mirror

Why string theory?

The difference between magnetic fields and electromagnetic radiation

How to determine whether a nuclear transition would be electric octupole, or hexadecapole?

How does any vibrating object generate sound?

Showing existence of negative temperature for a quantum system

What is the simplest way to prove that Earth orbits the Sun?

Does a moving charge have additional (magnetic) energy

Question about particles in electric fields. Homework question

How is the conservation of momentum satisfied in long-range attraction such as electromagnetism and gravity?

Reflectivity of Metals - real and imaginary part of k-vector and complex dielectric function

Is there any easy process that absorbs heat?

Finding the wave function of a quantum harmonic oscillator

Using rotation matrix for spin to write x oriented spin in z-spin basis

Biological heat dissipation methods

Degeneracy split in $n=2$ hydrogen due to uniform electric field. Why is main diagonal zero?

Direction of acceleration at highest point

Proof of conservation of energy with the relativistic definition of force

Force between two point charges moving parallel to each other

What is the location of point charge with respect to the original charged body?

Why doesn't steady flow of air create sound?

Can pressure be negative?

Why do objects appear smaller when farther away?