berkeman's latest activity
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berkeman replied to the thread How the Blue Angels Train.Kind of like the Seal Team 6 rehearsals for the Osama Bin Laden raid... :wink: -
berkeman replied to the thread Random Photos.On a recent MTB ride I was coming back down from a winding dirt road climb, and noticed a shadow in the dirt by my front wheel of what...
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berkeman reacted to jrmichler's post in the thread Soft/Stable Movement for Parallelogram Mount with Wheel + Printhead with
Informative.
Search dashpots in McMaster-Carr. Dashpots are designed to slow something down for a soft landing. You will need some sort of bracket... -
Once dragon flies land they can stay put for a while. I have a pond in the back yard. They come from aquatic larvae and seem to like...
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berkeman replied to the thread Explain this asphalt sheen.Did it say in the Reddit post what kind of vehicle that is and what kind of window treatment it has? Also, if you can still see the...
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It's still there today - although a bit faded. On closer inspection, it's looking more like a rainbow than ever. The number of bands is...
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berkeman replied to the thread EMF (Electromagnetic Field) & EHS (Electromagnetic Hyper Sensitivity).Those are very tiny signals, and not likely to cause any physical effects. Folks here at PF have lots of experience with EM shielding...
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berkeman replied to the thread EMF (Electromagnetic Field) & EHS (Electromagnetic Hyper Sensitivity).Thread is closed temporarily for Moderation.
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berkeman reacted to Mark44's post in the thread Learning Assembly and computer architecture for x86 with
Like.
Assembly languages are very much specific to the CPU being used. Years ago, Apple Mac computers used Motorola M6800x processors, which... -
The God of thunder, crossed the skies, upon his favourite filly. "I'm Thor", he cried, and the horse replied, "You've thorgotten the...
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berkeman replied to the thread Collection of Lame Jokes.
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berkeman replied to the thread Collection of Lame Jokes.
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Soccer ball, the car:
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berkeman reacted to PeroK's post in the thread A How does time derivative commute from one variable to another? with Informative.
The definition of a differential that I use is: If ##x = f(t)## then ##dx = f'(t)dt##, where ##f'(t) = \frac{df}{dt}##. So, as ##\dot...
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berkeman replied to the thread Explain this asphalt sheen.Okay, fair enough. Since that may involve workplace security considerations, I won't say anything further on that. I basically need...
