Recent content by berkeman

Can you say more about why you are doing cross-correlations between different frequency channels?

Welcome to PF. :smile:

Welcome to PF, Ken. :smile:

Upon further review, the thread is reopened for now.

Great reply, @TensorCalculus :smile: Their Profile/About page says they are in Turkey.

Thread is closed for Moderation.

Ah, got it. Well, I just checked our portable fan (which has flat blades) and indeed the dust accumulation is on the front of the fan, not the back. It must be due to impacting the air on the front side where the air is pushed away from the fan.

It's a forum bug, reference now deleted.

Cheaper fans use flat blades at an angle. Better fans use airfoils at an angle (like a propeller). Here is a good PF Insights article that may give you more of a feeling for how air moves around a fan/propeller and why the airflow over the back surface is slower/lower pressure (and may lead to...

I didn't recognize his name, but when I clicked into the link I definitely recognize his face. I think I watched a number of his Computer Chronicles shows. RIP.

Okay, since we don't seem to have any good responses, what has your reading shown you so far?

I dated a woman in undergrad who had this syndrome. It affects about 1/10,000 folks, and can lead to misdiagnoses in EMS (she had an appendicitis episode that was initially misdiagnosed and delayed her treatment).