PSN-L Email List Message
Subject: Re: pivots vs bearing structures
From: "meredith lamb" paleoartifact@.........
Date: Mon, 18 Feb 2008 20:32:24 -0700
Hi Charles and all,
ONLY on the light side....your rocking chair analogy sure brings
back the most unusal memory I have of a quake that occurred
in 1969 in the Portual-Morocco area, M7.8; that I "felt" in the
Denver, Colorado area. I was asleep in a rocking chair, when
I had the feeling I was moving (or rocking), and rolled my head
over to check on a makeshift drum recorder I had running....it
was synchronizing the slow movement with a hooked up seismometer
I had in operation. For the rocking chair "seismometer"; in effect, I was
the "mass" !
I did just lay there and watched awhile.....it was a unforgettable
Your project meets with my rolling approval...
Take care, Meredith
On 2/18/08, Charles R. Patton wrote:
> The whole thing is an upside down pendulum. Think about a rocking
> chair. It has the same properties as this cylinder.
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