berkeman's latest activity
-
I have always been a big watch guy. I have a couple of watches that have a theme for time itself! I have two Xeric watches, one that... -
berkeman replied to the thread Undergrad DH Mt Bike - Optimizing Drop Landing Ramp Profile.Another fun video about dropoffs (well, and some other stuff)... :smile:
-
berkeman reacted to mjc123's post in the thread Why do octets lead to a stable configuration? with
Informative.
They don't intrinsically. A sodium atom with a single electron in the 3rd shell is more stable than a sodium ion (with a closed shell... -
berkeman reacted to BillTre's post in the thread Clues to Homing Pigeon Navigation Mechanism with Informative.
Animal navigation, long mysterious, may about to become better understood. An unexpected mechanism in homing pigeons appears to sense...
-
Ima debate on time (Like if it started or ended)
-
berkeman replied to the thread High School A question about the rotation of points on a wheel.I did this Google Videos search and got good hits:
-
-
berkeman replied to the thread High School A question about the rotation of points on a wheel.Have a look at this article about the Cycloid motion of a point on a wheel: https://en.wikipedia.org/wiki/Cycloid...
-
-
berkeman reacted to renormalize's post in the thread Hello from an Independent Researcher in Cosmology with
Like.
Welcome to Physics Forums, but do note that discussing unpublished personal work is not allowed here: Speculative or Personal Theories... -
berkeman replied to the thread Very cool inrtoduction.Welcome to PF, Sam. :smile:
-
berkeman reacted to PeterDonis's post in the thread Artemis 2 launch - humans return to the Moon after 54 years with Informative.
There's a fairly narrow band of trajectories that will give a free return to Earth, yes. They plan for mid-course correction burns to...
-
berkeman replied to the thread System's theory guy, I guess.Welcome to PF, Richard.
-
berkeman reacted to DaveE's post in the thread Undergrad Capacitor Voltages at t = 0: Zero or Split? with Like.
If y'all think repeating your position over and over, and over and over, and... will convince the other guy, you may want to focus a bit...
-
berkeman replied to the thread High School A question on the geometry of black holes.Thread is closed briefly for Moderation...
-
berkeman replied to the thread Undergrad Calculating sample size?.Is that a valid assumption, though? @Andy Resnick -- what are the typical causes of contamination in this setup? Does it usually come...
-
berkeman reacted to Andrew Mason's post in the thread Thermodynamics of capacitor filled with a linear ideal gas dielectric with Like.
The use of capital V for volume and voltage is confusing. I will use lower case ##v## for voltage and upper case ##V## for volume. Your...
