berkeman's latest activity
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berkeman reacted to DavidL070949's post in the thread Help with problem in MIT open course general relativity with
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All of this is very helpful indeed! I'm going to try to work through the details on my own, so that I make sure I really understand and... -
berkeman replied to the thread Undergrad DH Mt Bike - Optimizing Drop Landing Ramp Profile.
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berkeman reacted to mfb's post in the thread Voyager 1: order-of-magnitude cross-track drift and speed loss over the next 100–1000 years with
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With your assumptions, the acceleration due to gas (or gas+dust, a 1% effect isn't important here) is ##\frac{v^2\rho A}{m} = 7\cdot... -
I am from Computer Science background, but i am also very interested in learning more about Mathematics, Philosophy and Physics. Hope to...
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berkeman reacted to jedishrfu's post in the thread HS Physics Teacher looking for support with Informative.
There are some interesting pop sci books where you can use physics to solve a math problem. Kids might like that reverse view. The book...
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berkeman replied to the thread HS Physics Teacher looking for support.Welcome to PF! :smile:
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Hi all, I've been in the world of physics for about 4 years. I teach physics only and want to continue doing so. Teaching high school...
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berkeman replied to the thread introduction.I think you must mean this part of the rules: In that context, it just means don't post in all bold font, since that is distracting...
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berkeman replied to the thread introduction.Welcome to PF. :smile: Please be sure to read the PF Rules (see INFO at the top of the page). We do not allow personal speculation or...
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berkeman replied to the thread Undergrad DH Mt Bike - Optimizing Drop Landing Ramp Profile.
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According to the GQ GMC-800 Geiger Counter User Guide: Background Safe Levels Suggested background readings levels: 1. Safe level...
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berkeman reacted to robphy's post in the thread Help with problem in MIT open course general relativity with Informative.
There is a Levi-Civita tensor ( https://en.wikipedia.org/wiki/Levi-Civita_symbol#Example:_Minkowski_space ), which is the volume element...
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berkeman reacted to jojosg's post in the thread Engineering Shear Stress Question (Rocker Arm & pin diameter) with Like.
ok Thank you very much!
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berkeman reacted to Mayhem's post in the thread Side reactions while dissolving silver with Informative.
Your descriptions a little hard to follow. Gardening is irrelevant to the chemistry. What I'm seeing is Step 1: H2SO42 (aq) +...
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Where are all these people going? Down to the Tidal Basin in Washington DC, to see the cherry blossoms!