berkeman's latest activity

I have a problem with the very first experiment. In my opinion, its educational value needs to be re-examined because it...

There is a whole bunch of them here https://www.pdst.ie/sites/default/files/ph_pr_alllistedphysexpr.pdf To @EricaC: How familiar are...

Thank you for your helpful comments, as always.

Oh, sorry that I misunderstood what you wrote. Thanks for the clarification. Can you post some links to the Irish Leaving Certificate...

Welcome to PF. :smile: What is that? Can you give more details about the experiments, and perhaps some links to what you are talking...

Since it's a town house, you might try asking your neighbors if they have one too and what it does.

My last house had a switch that controlled a louver to the upstairs HVAC so you could shut it in the summer when the upstairs got too hot.

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...

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...

Yikes. I'm not understanding that abstract. Can you summarize what they found?

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...

Hi there! This is Vmax, an old (relatively, but the profession can definitively accelerate aging) aerospace engineer now returning to...

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...

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...