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Aritra Das
  • Member for 7 years, 9 months
  • Last seen more than a week ago
326 votes
34 answers
50k views

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

149 votes
2 answers
17k views

Why does a mirror split my laser beam?

  • 1,464
131 votes
5 answers
34k views

What does it mean for two objects to "touch"?

118 votes
2 answers
90k views

On this infinite grid of resistors, what's the equivalent resistance? [closed]

  • 4,771
116 votes
19 answers
121k views

Books for general relativity

112 votes
14 answers
27k views

QM without complex numbers

  • 3,126
108 votes
6 answers
27k views

Why is oil a better lubricant than water?

  • 4,679
105 votes
2 answers
7k views

Is there such thing as imaginary time dilation?

101 votes
19 answers
173k views

What is a good introductory book on quantum mechanics?

80 votes
9 answers
132k views

What is the physical significance of dot & cross product of vectors? Why is division not defined for vectors?

  • 6,695
79 votes
11 answers
12k views

What is time dilation really?

47 votes
5 answers
4k views

What causes this pattern of sunlight reflected off a table leg?

  • 471
44 votes
4 answers
10k views

Cooling a satellite

  • 563
37 votes
7 answers
4k views

Can one do the maths of physics without using $\sqrt{-1}$?

  • 449
27 votes
3 answers
2k views

The scope of physics, as taught in modern times

  • 476
24 votes
2 answers
4k views

If action equals reaction, how is it ever possible to win in martial arts?

  • 351
24 votes
1 answer
1k views

Causality and how it fits in with relativity

24 votes
3 answers
3k views

The geometrical interpretation of the Poisson bracket

  • 447
23 votes
5 answers
8k views

Why position is not quantized in quantum mechanics?

  • 15.9k
22 votes
3 answers
2k views

How to count microstates in quantum statistical mechanics

  • 339
19 votes
5 answers
11k views

How does a wire carry alternating current?

18 votes
4 answers
9k views

Does Quantum Mechanics say that anything is possible? [duplicate]

13 votes
4 answers
3k views

3D glasses giving the opposite effect to that expected

  • 2,783
13 votes
1 answer
999 views

Is a weak measurement the same as an unsharp measurement or POVM?

  • 9,672
10 votes
3 answers
229k views

What is the sign of the work done on the system and by the system?

  • 1,149
9 votes
2 answers
721 views

The $I_{3322}$ Inequality

4 votes
1 answer
6k views

What is an effective potential in classical mechanics?

  • 3,335
3 votes
1 answer
403 views

Maximally mixed state as input of a quantum circuit

2 votes
0 answers
133 views

How to solve this multi-variable non-linear differential equation?

1 vote
1 answer
123 views

Vector form of this equation