berkeman's latest activity
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berkeman reacted to Steve4Physics's post in the thread Looking for lab experiments for a High School Physics class with
Like.
The coefficient of kinetic friction is generally a bit smaller than the static coefficient. Of course, the laws of physics may vary... -
berkeman reacted to bijuastro's post in the thread Graduate Why are the bulge particles coming out in the Gadget 2 simulation? with Like.
Thanks a lot, yeah it seems bulge particle velocities were high enough.
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Hey everyone! Here is a senior high school student. I am pretty into the essential principle behind the textbook's knowledge. Hope I can...
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berkeman reacted to .Scott's post in the thread Undergrad How many carriers for phased array? with Like.
I wasn't going to get into his theremin design. But if we do, why would we use a phase array instead of two or three directional...
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berkeman replied to the thread RIP Anthony J Leggett (1938 - 2026), superfluidity.A very long life well lived.
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berkeman reacted to robphy's post in the thread RIP Anthony J Leggett (1938 - 2026), superfluidity with Like.
https://en.wikipedia.org/wiki/Anthony_Leggett https://www.nytimes.com/2026/03/11/science/anthony-james-leggett-dead.html...
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berkeman replied to the thread Plastic Electric Kettle and Microplastic release.Hmm. I boil my water in a 2-cup Pyrex glass measuring cup in a microwave oven and pour that hot water over my coffee grounds in a...
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berkeman reacted to renormalize's post in the thread Undergrad How many carriers for phased array? with
Informative.
A standard Theremin uses 3 oscillators, two working at about 260 kHz and one at 450 khz. Nothing oscillates at nearly a gigahertz. See... -
berkeman replied to the thread Undergrad How many carriers for phased array?.Yikes, you may be missing a minus sign or something there... :wink: From a Google search on VDE Level B at 3m test distance: So you...
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berkeman replied to the thread Undergrad How many carriers for phased array?.What is your planned transmit power in dBm? What is the maximum allowed RF level detected for Germany's Level A and Level B tested at 3...
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berkeman replied to the thread Possibility of spellcheck feature?.Do you have spellchecking enabled in your browser Settings?
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berkeman replied to the thread Undergrad How many carriers for phased array?.I see from your Profile that you are in Germany. I have designed and qualified RF products for use in Germany, and 700-800MHz...
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berkeman replied to the thread Undergrad How many carriers for phased array?.Can you say more about the application? How "nearby" are the two areas, and how far are the areas from your antenna array? Why have...
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berkeman replied to the thread Possibility of spellcheck feature?.Firefox in Win10 on a laptop for me, and I also see underlined red words and have the option to right-click and Add to my Dictionary. I...
