SammyS's latest activity
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SammyS reacted to mathwonk's post in the thread Undergrad Ambiguity of the term "indefinite integral" with
Like.
I try to emphasize to my classes that, to understand any statement, it is crucial to make precise what the terms in it mean, to give not... -
SammyS reacted to Baluncore's post in the thread Undergrad Capacitor Voltages at t = 0: Zero or Split? with Like.
Step rise time, tr = 1 ps. Total circuit resistance, R2 = 1 pΩ. Initial charge current, I = 250 kA. Those are quite unreal values for a...
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brute force counting and then work backwards knowing the answer seems to nearly always lead to a clearer path ps. It will be at least...
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SammyS reacted to Greg Bernhardt's post in the thread Suggestion Show pronouns of a person? with
Agree.
This is a minor courtesy to add in, and we will. Let's refocus our energy on complicated issues. -
For me, resistance would be futile.
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SammyS reacted to JT Smith's post in the thread Why Are You Still Here? A Curious Question with
Love.
I enjoy pedantically correcting minor errors of virtual strangers I will never meet in person. For example, your first bullet item... -
SammyS reacted to AlexB23's post in the thread Announcement PF Member Awards 2025 Coming Soon! with Like.
Looking forward to the results. It would be cool if there was an award for the member who uses multiquote the most. It is cool when...
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Google's AI sure chose a strange image for it's explanation of Colonoscopy...
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SammyS reacted to DaveC426913's post in the thread Undergrad Please Explain (actually explain) The Monty Hall Problem with
Haha.
Y'know, we have all been making some pretty bold assumptions about the range of possible outcomes... -
SammyS reacted to Dale's post in the thread Insights What Exactly is Dirac’s Delta Function? - Insight with Like.
You really didn’t clarify the notation. The fact that the notation is Dirac’s and is not used anymore is a bit of history, not a...
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SammyS reacted to renormalize's post in the thread Undergrad Does a Point Charge in Classical Electromagnetism Possess Self Energy? with Like.
What Jackson says there regarding discrete charge distributions is (my emphasis added): So the self-energy terms are there in principle...
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SammyS reacted to haruspex's post in the thread Is it possible for a vertical rod balancing on a table to lose contact by striking the top of the rod? with Agree.
It is stated as frictionless, but it makes no difference anyway.
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SammyS reacted to mmfiizik's post in the thread Two-layer dielectric, four-capacitor model vs three-capacitor model with Like.
Thank you all for explanations. I tried to prove this to myself by contradiction, but it might be an oversimplification. If we assume...
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SammyS reacted to Steve4Physics's post in the thread Two-layer dielectric, four-capacitor model vs three-capacitor model with Like.
I don’t think that’s correct – there will be discontinuities in charge-densities and field-strengths as you move left to right. To add...