Re: [Phys-L] coffee

[Peter Schoch <pschoch@fandm.edu>]

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:

https://epubs.siam.org/doi/abs/10.1137/16M1077787  (SIAM)

https://journals.aps.org/pre/abstract/10.1103/PhysRevE.85.046117  (PhysRev
E)

http://iyptmag.phy.ntnu.edu.tw/upload/journal/prog/878da928_20161107.pdf

Hope those help!
Peter Schoch
Sussex County Community College

On Fri, Jan 31, 2020 at 12:32 PM Bill Norwood via Phys-l <
phys-l@mail.phys-l.org> 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 <phys-l@mail.phys-l.org>
> wrote:
> > 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
> hall.
> > Don
> > > -----Original Message-----
> > > From: Phys-l [mailto:phys-l-bounces@mail.phys-l.org] On Behalf Of
> Anthony
> > > Lapinski
> > > Sent: Friday, January 31, 2020 10:57 AM
> > > To: phys-l@mail.phys-l.org
> > > Subject: [Phys-L] coffee
> > >
> > > 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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