Everyone gets bored of always answering the same questions over and over again. It's normal. Especially if it's Physics. That's why we have FAQs. But next to the always asked questions, there are also the often asked, those who just can not make it to big FAQs but really are popular enough to annoy the answerer, helplessly scrolling for new adventures in a sea of déjà-vus.
This is not a definitive FAQ, nor is it necessarily a good FAQ, it's just my FAQ. It's shamelessly skewed towards my view of the physical world. It is also very inconsistent in the level requested of the reader. Typically, I'd just assume the minimal background needed for the answer to be a pleasurable conversation, neither a patronizing poem nor a bored review.
You can contribute if you want! Check the README at the Github project page or just hit me up on Reddit.
You can find a printable, up-to-date .pdf version of the CAPQ here. (This .pdf is a work in progress and content might be scrambled, missing, or badly laid out.)
OM1 - How do gravity assists/slingshots work?
OM2 - Why won't/didn't New Horizons stop at Pluto and instead had to fly by?
CED1 - What is the Maxwell stress tensor \(\mathbf{\sigma}\) and how does it work?
CED2 - Why is current produced to a wire when moving a magnet close to it?
SR1 - In what sense does \(E=mc^2\), and what does it mean?
SR2 - if photons are massless, how can \(E=mc^2\)?
GR1 - How long does a year on Mercury last from Mercury's point of view?
QFT1 - What is "imaginary time"? And what is meant by "Euclidean spacetime"?
QED1 - How does \(1+2+3+\ldots=-1/12\)/\(\zeta\)-regularization enter in the Casimir effect?
HEP1 - Why are photons massless?
HEP2 - Why do photons not acquire a mass through the Higgs mechanism?
HEP4 - Is the electron a point particle, or an extended object? How sure are we of that?
QG1 - If the Planck length/Planck time is the smallest measurable/possible length/time, then...?
QG2 - since the electron is a point mass, is it a black hole?
Imagining the Tenth Dimension / Rob Bryanton
The Stand-Up Physicists / Doug Sweetser
Nassim Haramein / Resonance Project / Schwarzschild proton / Haramein-Rauscher metric
An exceptionally simple theory of everything / \(E_8\) Theory / Garret Lisi