berkeman's latest activity
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berkeman reacted to Ranger Mike's post in the thread Automotive BMW ROD Bearing problems with
Informative.
Number one way to ruin a rod bearing is to spin up the engine to high RPM before the oil is warm. Let the engine temperature rise to... -
berkeman replied to the thread Engineering Physics Major Considering Masters in EE -- Need help!.I dunno. The consulting work that I've done over the years has been "You are an expert in this, and we need your help getting results...
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berkeman replied to the thread Ultraclean graphene, electrical and thermal conductivity.Yikes. I'm not understanding that abstract. Can you summarize what they found?
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berkeman reacted to Astronuc's post in the thread Ultraclean graphene, electrical and thermal conductivity with
Like.
Universality in quantum critical flow of charge and heat in ultraclean graphene https://www.nature.com/articles/s41567-025-02972-z... -
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...
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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...
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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...
