Spinnor's latest activity
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Spinnor reacted to jedishrfu's post in the thread I 1:1 versus 2:1 Mechanical Advantage debate with
Like.
Your self-haul with a single fixed pulley has a 2:1 MA in the ideal case: half the force, twice the rope. The confusion clears the... -
Spinnor reacted to phinds's post in the thread Announcement Please welcome berkeman as PF Admin with Like.
And by the way, congratulations Mike. Once again, I thank you for all the effort you put in to keep this forum as great as it is.
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Spinnor reacted to Greg Bernhardt's post in the thread Announcement Please welcome berkeman as PF Admin with Like.
I am thrilled and honored to announce that @berkeman has accepted a role as PF Admin! @berkeman has 20 impactful years at PF under his...
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Spinnor reacted to DrClaude's post in the thread I How does the electron come back down in energy level after absorbing a photon? with Like.
https://chem.libretexts.org/Bookshelves/Inorganic_Chemistry/Inorganic_Chemistry_(LibreTexts)/08%3A_Chemistry_of_the_Main_Group_Elements/8...
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Spinnor reacted to PeroK's post in the thread I How does the electron come back down in energy level after absorbing a photon? with Like.
I suspect the full answer to this question may be quite complicated and that different types of objects have colour for different...
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Spinnor replied to the thread B Feynman QED Questions.I think the book is based on a series of lectures he gave, Your questions my be answered by watching them. The arrows in question...
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There is a feature called "Ignore", but that can be awkward when you ignore replies that may be helpful for you, and others reading a...