berkeman's latest activity
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Ok I will read and learn instead -
berkeman replied to the thread Graduate Stability of the Kerr–Newman black hole under small perturbations.Thread is closed for Moderation.
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berkeman replied to the thread Which material will stop magnetic attraction?.Can you post a link to the online question? Obviously any magnetic shielding effect would require a ferrous material.
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ohhh ma gosh haha
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There are many new technologies to develop for specific chemical processes or goals. Refining of lanthanides is one. New processes...
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berkeman replied to the thread Hi, I'm Jeff. I'm new to this site..Welcome to PF, Jeff. :smile:
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This discussion reminded me of this experiment. Could it be that humans are as smart as dogs? Look they can track things with their nose!
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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...
