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Re: [Phys-L] coffee

... or one could use a coffee cup with a lid. That solves the problem of resonance and bumping into someone around the corner.

Rick Strickert
Austin, TX

-----Original Message-----
From: Phys-l <> On Behalf Of Ron Mcdermott via Phys-l
Sent: Friday, January 31, 2020 10:38 AM
Cc: Ron Mcdermott <>;
Subject: Re: [Phys-L] coffee

I would think the primary thing would be to alter cadence so you are not setting up a resonance.

Sent from my iPhone

On Jan 31, 2020, at 10:57 AM, Anthony Lapinski <> wrote:

Now that I have your attention!

I see faculty walking past my room with their coffees every morning.
Is there an optimal walking frequency (speed) to minimize the liquid
from sloshing back and forth and spilling over? I imagine this depends
on the leg length, diameter of cup, depth of cup, etc.

P.S. I've never had coffee, but I'm curious about this sloshing phenomenon.



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