PeroK's latest activity
-
PeroK reacted to renormalize's post in the thread Undergrad Relativity, time, and quantum mechanics with
Like.
This is a follow-up to my post #27 (which so far has not received any specific comments), in which I drew from the 1982 Silverman... -
PeroK reacted to A.T.'s post in the thread High School Is it safe to fly in a spinning hollow asteroid? with
Like.
People on Earth are flying around using hang gliders, paragliders etc. I have never heard anyone suggesting placing safety nets all over... -
PeroK reacted to ohwilleke's post in the thread High School Is it safe to fly in a spinning hollow asteroid? with
Like.
To be clear, you mean impact with the ground inside the asteroid, not the asteroid impacting something else. And, it seems that this... -
PeroK reacted to ernestuz's post in the thread Other Hi, I need some advice about how to publish with
Like.
Hi, my main interest is having it peer reviewed. I managed to have three people having a look at it, Finally. 2 of them are related to... -
PeroK reacted to Rick16's post in the thread Undergrad Velocity of a free particle using Landau's approach with
Like.
The fact that dL/dv is constant was never the question. The question was why v is constant. -
PeroK replied to the thread There Be Monsters by Dave Collins.Well done! I couldn't resist asking ChatGPT what it thought of your title. It was generally positive: 'It echoes the old cartographic... -
PeroK replied to the thread Undergrad Velocity of a free particle using Landau's approach.Maybe it isn't the only solution. Any function of ##v## is also a function of ##v^2##. That said, you could specify that the Taylor... -
PeroK reacted to Vincf's post in the thread Undergrad Velocity of a free particle using Landau's approach with
Like.
Yes, it works in that direction. What I found more difficult was proving that it's the only possibility regardless of the Lagrangian... -
PeroK replied to the thread Undergrad Velocity of a free particle using Landau's approach.Let's allow ##L## to be any function of ##v^2##. Euler-Lagrange gives: $$\frac d {dt}\big (\frac{\partial L}{\partial... -
PeroK replied to the thread Undergrad Velocity of a free particle using Landau's approach.I don't have Landau, but I'm not sure why this needs to be complicated. In this case: $$L = v_x^2 + v_y^2 + v_z^2$$So: $$\frac{\partial... -
PeroK reacted to CrysPhys's post in the thread Job Skills Physics Careers: Expectations vs. Reality with
Like.
Whether this idea floats around out there (where? the aether?) is moot. A student contemplating spending 6+ yrs to earn a PhD in... -
PeroK reacted to ernestuz's post in the thread Other Hi, I need some advice about how to publish with
Like.
I am not striking the right chord. I don't want to discus any theory, I am looking for information about how to have this thing peer...