Bob Holmström, Editor, 2934 NW 53rd Drive, Portland, OR 97210 Phone: 503-292-3685, <holmstro@europa.com>

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 <emartt@oh.verio.com>

Issue 2001-3 Aug 2001

Page Contents

2-9 English Watches with Robin's Escapements by Dr. J. Ganczarczyk

10-11 Adjusting a Dual Pendulum Clock by Ned Bigelow

12 Crystal Oscillator Temperature Calibration via WWVB by Robert L. Belleville

13 Some Observations About Scientific Research & Discoveries by Martin Swetsky

14 Does a Pendulum's Axis of Rotation Shift with Amplitude Bob Matthys

15-17 Water Clock Bibliography by Gordon Uber

18-21 FFT Analysis of Clock Data Using Microsoft Excel by Bob Holmstrom

22 Translation of introduction to Thesis on Mercury pendulums

23 corrections to roster + note from Paul Hopkins + Invar book note

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. The deadline for material for the next issue is November 1st. Bob Holmstrom

Above: Drawing from Apians cosmographicus Liber of 1533, showing how a nocturnal is used to tell the time at night from the Great Bear.

Bob Holmström

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