berkeman's latest activity
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@pines-demon and @Morbert have been awarded the Science Advisor badge! -
Not yet, here in Italy it was quite bedtime when I saw the email notification of the reply. I will probably write today, but before that...
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berkeman reacted to Ibix's post in the thread Undergrad Rotation curve in spiral galaxy velocity and uniform velocity dispersion with
Informative.
I don't think there's a general answer to that question. You'd have to plug a density distribution into the maths and see what orbits... -
berkeman replied to the thread Machining Aerogel.Have you tried that yet? Do they have some kind of Support link on their web page?
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berkeman replied to the thread What type of energy is actually stored inside an atom?.After a Mentor discussion, the thread will remain closed. The OP's comments are borderline personal speculation, which we do not allow.
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berkeman replied to the thread New person here, where do I post my own personal hypothesis?.After some cleanup, the thread will remain closed. @Legodudelol9a -- I will send you a DM with some possible forums you could try for...
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berkeman replied to the thread Collection of Lame Jokes.
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berkeman replied to the thread Electric power distribution from powerplant to homes.I don't think high voltage distribution wires (in air on poles or towers) are coated with insulation. That would just add weight and...
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berkeman reacted to marcusl's post in the thread What mathematics software should engineering students use? with
Agree.
The OP is an instructor asking what SW he should require his students to use. -
Did you do any online searching before posting your question? The first link that comes up for me on Google for the search query...
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berkeman reacted to DaveE's post in the thread Undergrad How do I stretch a laser from a beam into a sheet? with Informative.
If you are so inclined, you can make a good clamp with simple tools in a block of whatever (I'd use Aluminum). Drill a hole just a tiny...
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berkeman reacted to DennisN's post in the thread Share Animal Pictures: For Animal Lovers with
Haha.
A funny video... :smile: Clever crow outsmarts TWO turkey vultures with ONE move -
Thank you.
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berkeman reacted to Astronuc's post in the thread History Underwater Acoustics: Brief Historical Overview Through WWII with Informative.
https://acousticstoday.org/wp-content/uploads/2021/03/Underwater-Acoustics-A-Brief-Historical-Overview-Through-World-War-II-Thomas-G.-Mui...
