National Association of Watch and Clock Collectors, Inc.
Horological Science Chapter #161
Horological Science Newsletter
Issue 2000-4 September 2000
Bob Holmström, Editor, 2934 NW 53rd Drive, Portland, OR 97210 Phone: 503-292-3685, <firstname.lastname@example.org>
Bill Givens, Sec. &: Publisher, 3850 Ashford Dr., Eugene, OR 97405 Phone (H): 541-465-9311 <Lbanks@ix.netcom.com>
Everett Jones, Treas., Phone: 440-729-4811
Ernie Martt, Founding Editor, Phone: 440-247-6712, Phone: 440-247-6712 <email@example.com>
2 - 7 Fact and Fancy by E. F. Wale
8 - 9 Silica Rod for a Seconds Pendulum by Roger Irving
10 - 15 The Notion of "Random Error" in Pendulum Clocks, Revisited by Alan W. Heldman
16 The Visual Display of Quantitative Information by Alan W. Heldman
17 - 19 What is the Best Way to Predict Future Performance of a Pendulum Clock by Alan W. Heldman
20 - 31 The Case for the Case - Part One by Alan W. Heldman
32 Clockquakes by Robert L. Bellville
33 Horological Science Archives by Gordon Uber and Fortunat Mueller-Maerki
34 Correction to Air Density Table by Dr. George Feinstein
34 Request for translation help by Bob Holmstrom
There are no Rock the Boat items in this issue. These are meant to be comments no longer than half a page
on horological topics, including controversial ones, but not personal. This is a quick way to write a
short article, convey an important idea or ask a question.
Request for articles: New material is always needed and appreciated. Are you or someone you know working
on something that would interest our readership? Please contact me if you need help getting your ideas
and work into print.
Above: Drawing from Apians cosmographicus Liber of 1533, showing how a nocturnal is used to tell the time
at night from the Great Bear.
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