berkeman's latest activity
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17 years in less than a month. Not very active lately. Getting older I suppose. But still one of the first things I do in the morning is... -
Hi there! This is Vmax, an old (relatively, but the profession can definitively accelerate aging) aerospace engineer now returning to...
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berkeman reacted to tech99's post in the thread I Off resonance driving of a MW/RF cavity with
Informative.
A waveguide does not follow the shape of the ordinary resonant curve, because it has sharp cut-off on the low frequency side. The PCB... -
berkeman reacted to renormalize's post in the thread I Gravitational self-interaction: another attempt to replace Dark Matter with Informative.
Having not read this paper I offer no opinion on its physics content. But with regard to its "seriosity" I will just point out that...
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It's been 21 years for me. I'm glad I found PF because the signal-to-noise ratio on sci.physics.relativity was terrible.
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berkeman replied to the thread 15 Years at PF!.Back at you bud! You're a big part of this wonderful community. :smile:
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berkeman replied to the thread 15 Years at PF!.Not exactly. I Follow a number of new users, and I can see their recent activity by looking at What's New>Your News Feed. I don't get...
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Hey all. Looks like my 15 year anniversary of joining PF happened yesterday (while my internet was down). Just wanted to say thanks to...
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And to think, I'm still waiting for my 15th anniversary of being alive :frown: Jokes aside, congrats!!!
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I apparently passed my 15 year PF anniversary earlier this year, but only noticed just now thanks to this post :biggrin: Anyway, I too...
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berkeman replied to the thread B What qualities does time have other than linearity, motion, and speed?.After a Mentor discussion, this thread will remain closed. The question amounts to pseudo-psychology, which we are not equipped to...
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berkeman reacted to Ibix's post in the thread B What qualities does time have other than linearity, motion, and speed? with
Haha.
Time is an illusion. Lunchtime doubly so. -
There is an instructor’s manual which is only available to instructors. By policy, PF does not provide information on books that are not...
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berkeman reacted to gmax137's post in the thread Other Don’t have a high enough IQ for physics so I want to give up with
Like.
I think everything in your post (after the first sentence) is incorrect. Here's what I know: Online IQ tests are meaningless Those... -
berkeman replied to the thread I'm an engineering student (for now...) who's interested in Physics.Welcome to PF; it's good to have you here. If you end up with specific academic-related questions, start a new thread in the Academic...