berkeman's latest activity
-
berkeman replied to the thread Hi, I'm Jeff. I'm new to this site..Welcome to PF, Jeff. :smile: -
berkeman replied to the thread Can Dogs Talk Using Buttons?. -
berkeman reacted to spacecadet2563's post in the thread High School Time travel without paradox with
Skeptical.
Time travel is logically possible. IF you moved faster than light or even a little less with time-dilation taking effect you live on... -
berkeman reacted to Astronuc's post in the thread High School GRB 250702B, the longest gamma-ray burst in history with
Informative.
There was an X-ray 'precursor', i.e., the X-ray process began almost a day earlier than the process that caused the gamma rays as... -
berkeman reacted to PeroK's post in the thread Graduate Horizontal component of the electric field of an infinite uniformly charged plane with
Like.
If I have time, I'll look at the details of what you've done. In general, if you have two limits, then the order can make a difference... -
berkeman reacted to spacecadet2563's post in the thread Undergrad Photons & Time: t=0 What? with
Like.
Thanks for all responses... -
berkeman reacted to Astronuc's post in the thread Effective Regulation Needed for Safety - Case of TWA Flight 514 with
Informative.
Case: TWA Flight 514 Issue: Controlled Flight into Terrain Communication and training across the airline industry is necessary for... -
berkeman replied to the thread Introduction upon registering on this site.Welcome to PF! :smile: -
berkeman reacted to Vincf's post in the thread Introduction upon registering on this site with
Like.
For almost 40 years I was a physics professor in France at the undergraduate level (preparatory classes for engineering schools). I am... -
berkeman replied to the thread C&EN, "Are COFs the new MOFs?".Nice. Oh to be an entry undergrad university student trying to decide what to study in university! This would be an amazing new choice... -
berkeman reacted to gmax137's post in the thread What did you do with your old college textbooks? with
Like.
I just got a brochure in my mail from Zubal Books. I had forgotten about them. They say they will buy Physics, Math, Engineering...the...
