user avatar
user avatar
user avatar
undefined
  • Member for 4 years, 2 months
  • Last seen this week
  • Hamburg, Deutschland
197 votes
8 answers
16k views

Why do we bend a book to keep it straight?

66 votes
8 answers
14k views

Can 1 kilogram of radioactive material with half life of 5 years just decay in the next minute?

  • 795
61 votes
10 answers
8k views

Quantum made easy: so what *is* quantum mechanics all about? [closed]

  • 1,108
58 votes
8 answers
6k views

How do different definitions of entropy connect with each other?

56 votes
5 answers
15k views

Do photons truly exist in a physical sense or are they just a useful concept like $i = \sqrt{-1}$? [closed]

  • 1,194
41 votes
3 answers
7k views

Can ants walk on liquid mercury? [closed]

  • 513
19 votes
5 answers
8k views

What happens when a photon "dies"?

  • 375
14 votes
4 answers
11k views

Why do atoms emit a certain colour of light? (The emission spectra)

13 votes
5 answers
2k views

Ionizing radiation in thermal radiation

  • 475
7 votes
2 answers
2k views

Is it possible to re-identify a particular electron? are there identity conditions for electrons?