berkeman's latest activity
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berkeman reacted to Dale's post in the thread Insights Thinking Outside The Box Versus Knowing What’s In The Box with
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After a severe thread cleanup, and several thread bans, this thread is reopened. Please remember that we want to keep PF productive... -
berkeman replied to the thread I'm trying to intuit how pull-up and pull-down resistors work.What are (i) and (ii)? I will send you a DM to help you learn how to use the Reply/Quote features at PF. It is very confusing when you... -
berkeman reacted to phyzguy's post in the thread High School Looking for info about the Sombrero Galaxy with
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Basically all large galaxies have super-massive black holes in the center. It's thought that the galaxy and black hole grow up... -
berkeman replied to the thread Wood/Glass/Metal Which 3D printer would be best for this printing job?.So 40 pounds through a 3 inch lever arm? Are you sure you want to use plastic (or carbon fiber?) or would metal as suggested by... -
berkeman replied to the thread Wood/Glass/Metal Which 3D printer would be best for this printing job?.I'm probably of no help on choosing a good 3D printer for this, but can you say what the application is? What kind of forces will this... -
berkeman reacted to .Scott's post in the thread High School Looking for info about the Sombrero Galaxy with
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A planet that orbits a black hole without also orbiting a star would be missing that nice steady warmth and glow of a sun that continues... -
berkeman replied to the thread Collection of Lame Jokes. -
berkeman reacted to jrmichler's post in the thread Synchronous Condensers for Power Grid Stabilization with
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I got the same, then cut and pasted just the https://www.pv-magazine-australia.com portion of the link. I clicked on the article, and... -
berkeman replied to the thread Someone interested in quantum materials and covetics.Welcome to PF; it's good to have you here. :smile: When you start a thread to discuss such topics, it helps a lot if you can link the...
