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Re: [Phys-L] coffee

So, you are not the first to ask the question. I am amazed at the research
published on certain topics at times... Try these links/reference: (SIAM) (PhysRev

Hope those help!
Peter Schoch
Sussex County Community College

On Fri, Jan 31, 2020 at 12:32 PM Bill Norwood via Phys-l <> wrote:

What has worked nicely for me is to move the cup in one-foot-diameter
horizontal circles while walking.
Bill Norwood

Sent from my iPhone

On Jan 31, 2020, at 11:37 AM, Don via Phys-l <>

One of the engineers I most admired at work for his technical insight
and ingenuity used to carry his coffee cup down the hall in a homemade
holder which he would swing with great abandon (some for audience effect
and some to prevent spillage) as he hurried down the hall. The holder
consisted of a square support piece of thin stiff material with a hole in
each corner. From each hole he had tied a piece of string with all four
strings tied together about 1 to 2 feet above the supported cup. I used to
marvel at how effective it was at preventing any spillage of the coffee in
the cup, as long as he kept swinging it, despite his hurrying down the

-----Original Message-----
From: Phys-l [] On Behalf Of
Sent: Friday, January 31, 2020 10:57 AM
Subject: [Phys-L] coffee

Now that I have your attention!

I see faculty walking past my room with their coffees every morning. Is
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,
of cup, depth of cup, etc.

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



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