berkeman's latest activity
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berkeman replied to the thread Can Dogs Talk Using Buttons?. -
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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...
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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...
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berkeman replied to the thread Introduction upon registering on this site.Welcome to PF! :smile:
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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...
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One of the big problems I have as an instructor of sport detection dogs is getting the humans to recognize that dogs neither think like...
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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...
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Covalent organic frameworks (COFs) may offer advantages over Nobel Prize–winning metal-organic frameworks (MOFs)...
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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...
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How to train for curling:
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berkeman reacted to Steve4Physics's post in the thread Finding the acceleration of a block on an inclined plane with friction with Like.
Welcome to PF! I agree with your results but have some comments. Yes, you have accounted for friction correctly. It is good practice...
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berkeman replied to the thread Can Dogs Talk Using Buttons?.I keep seeing color coded buttons or button groups in your video and other photos. Why do they use color coding since dogs are...
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