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Last modified: 2024-05-06

1. Foucault Pendulum (score: 444)

Author: PHRP@FHSUVM.FHSU.EDU (Roger A. Pruitt)

Date: Fri, 16 May 1997 11:46:01 -0500

The Scientific American Book of Projects for the American Scientist by C. L. Strong published by Simon & Schuster (1960) has a useful entry on the Foucault pendulum and how to drive a pendulum. It st

/archives/1997/05_1997/msg00264.html (6,976 bytes)

2. Foucault Pendulum (score: 421)

Author: "Daniel L. MacIsaac" <Dan.MacIsaac@nau.edu>

Date: Thu, 15 May 1997 20:06:09 -0700 (MST)

A colleague has had some difficulty locating articles related to the Foucault pendulum and its construction. Anybody out there have any quick references handy? Muchas gracias! -- Van E. Neie ven@phys

/archives/1997/05_1997/msg00251.html (6,197 bytes)

3. Foucault pendulum applet (score: 357)

Author: Bob Sciamanda <trebor@VELOCITY.NET>

Date: Fri, 4 Oct 2002 14:09:28 -0400

Although this is not explicitly stated, I infer from the stated requirements that this applet requires Netscape, and will not run for Bill Gates! Bob Sciamanda (W3NLV) Physics, Edinboro Univ of PA (e

/archives/2002/10_2002/msg00062.html (4,544 bytes)

4. Foucault pendulum applet (score: 357)

Author: paul o johnson <pojhome@SWBELL.NET>

Date: Fri, 4 Oct 2002 15:47:04 -0500

I can't get it to work, either. Same conditions. poj -- Original Message -- From: "Joe Heafner" <heafnerj@VNET.NET> To: <PHYS-L@lists.nau.edu> Sent: Friday, October 04, 2002 9:33 AM Subject: Foucault

/archives/2002/10_2002/msg00066.html (4,675 bytes)

5. Bravais versus Foucault pendulum (score: 355)

Author: Brian Whatcott <betwys1@sbcglobal.net>

Date: Thu, 29 Feb 2024 21:32:03 +0000 (UTC)

Those faced with a paywall at the givenURL may profit from viewing the paper at Researchgate here: (PDF) The Bravais pendulum: The distinct charm of an almost forgotten experiment (PDF) The Bravais p

/archives/2024/2_2024/msg00022.html (5,813 bytes)

6. Foucault pendulum applet (score: 341)

Author: Bernard Cleyet <anngeorg@PACBELL.NET>

Date: Fri, 4 Oct 2002 19:19:24 -0700

I was not even able to down load the Java from Sun (window too small to click on link). bc Joe Heafner wrote: Hi. Has anyone had any luck with the Java 3D Foucault pendulum applet at: <http://mats.gm

/archives/2002/10_2002/msg00067.html (4,286 bytes)

7. Foucault pendulum applet (score: 341)

Author: Joe Heafner <heafnerj@VNET.NET>

Date: Fri, 4 Oct 2002 10:33:24 -0400

Hi. Has anyone had any luck with the Java 3D Foucault pendulum applet at: <http://mats.gmd.de/~skaley/vpa/foucault/foucault.html> I can't get it to work despite my having downloaded and installed the

/archives/2002/10_2002/msg00060.html (3,947 bytes)

8. Bravais versus Foucault pendulum (score: 337)

Author: John Denker <jsd@av8n.com>

Date: Thu, 29 Feb 2024 11:37:00 -0700

Hi -- If anybody is considering building a Foucault pendulum, consider a Bravais pendulum instead. Think of what you know about polarization (as applied to photons and other 2-state systems). A Fouca

/archives/2024/2_2024/msg00021.html (4,876 bytes)

9. Re: Foucault pendulum circuit (score: 312)

Author: Brian Whatcott <betwys1@SBCGLOBAL.NET>

Date: Sun, 13 Nov 2005 23:42:24 -0600

At 09:54 PM 11/13/2005, you wrote: Hi All: I've got the task of repairing our 36 year old Foucault pendulum display. A few years ago the campus electronic systems repair guys ripped out the (complete

/archives/2005/11_2005/msg00164.html (6,626 bytes)

10. Re: Foucault pendulum (score: 305)

Author: Brian Whatcott <betwys1@SBCGLOBAL.NET>

Date: Mon, 14 Nov 2005 18:27:30 -0600

I am disappointed that nobody has been able to see through the analysis of a continuous AC pendulum drive. As far as I recall, there is a speed of crossing the axisymetrical electromagnet which provi

/archives/2005/11_2005/msg00189.html (6,686 bytes)

11. Re: Foucault pendulum (score: 304)

Author: John Denker <jsd@AV8N.COM>

Date: Tue, 15 Nov 2005 12:54:24 -0500

I am completely mystified by this thread so far. If I read things aright, the present incarnation of the circuit contains no feedback, but is "very unstable". I don't see how that can posibly be. Wit

/archives/2005/11_2005/msg00216.html (5,041 bytes)

12. Re: Foucault pendulum (score: 304)

Author: Bernard Cleyet <anngeorg@PACBELL.NET>

Date: Tue, 15 Nov 2005 19:26:59 -0800

I haven't been keeping up, so this may be another cleyet off the deep end: could there be magnetic feed back due to hysteresis in the steel suspension? bc John Denker wrote: I am completely mystified

/archives/2005/11_2005/msg00228.html (5,166 bytes)

13. Re: Foucault pendulum (score: 281)

Author: Bernard Cleyet <anngeorg@PACBELL.NET>

Date: Mon, 14 Nov 2005 11:41:49 -0800

What you want is a clock pendulum drive. They are very inexpensive and do not modify the period as determined by the pendulum. The Sci. Am. article's may be the same as the commercially available one

/archives/2005/11_2005/msg00177.html (5,726 bytes)

14. Re: Foucault pendulum circuit (score: 281)

Author: John Denker <jsd@AV8N.COM>

Date: Mon, 14 Nov 2005 08:42:11 -0500

Michael Edmiston wrote: I'm guessing the "feedback" John Sohl was talking about is unintentional feedback as opposed to designed feedback. If that is not true, ignore the rest of this message. It is

/archives/2005/11_2005/msg00169.html (9,583 bytes)

15. Foucault pendulum circuit (score: 272)

Author: John SOHL <jsohl@WEBER.EDU>

Date: Sun, 13 Nov 2005 20:54:45 -0700

Hi All: I've got the task of repairing our 36 year old Foucault pendulum display. A few years ago the campus electronic systems repair guys ripped out the (completely functional) vacuum tube circuit

/archives/2005/11_2005/msg00163.html (5,918 bytes)

16. Foucault Pendulum (score: 266)

Author: ven@physics.purdue.edu (Van E. Neie)

Date: Thu, 15 May 1997 16:05:02 -0500 (EST)

A colleague has had some difficulty locating articles related to the Foucault pendulum and its construction. Anybody out there have any quick references handy? Muchas gracias! -- Van E. Neie ven@phys

/archives/1997/05_1997/msg00247.html (3,805 bytes)

17. Re: Foucault pendulum (score: 262)

Author: Brian Whatcott <betwys1@SBCGLOBAL.NET>

Date: Mon, 14 Nov 2005 10:36:09 -0600

At 07:59 AM 11/14/2005, John Suhl, you wrote: Brian's suggestion of a simple AC circuit is interesting but I wonder about phase issues and keeping the pulse period exactly the same as the pendulum's

/archives/2005/11_2005/msg00174.html (4,729 bytes)

18. Foucault pendulum (score: 256)

Author: John SOHL <jsohl@WEBER.EDU>

Date: Mon, 14 Nov 2005 06:59:53 -0700

Mike is right: - - - - - I'm guessing the "feedback" John Sohl was talking about is unintentio= nal feedback as opposed to designed feedback. If that is not true, ignor= e the rest of this message. -

/archives/2005/11_2005/msg00171.html (5,135 bytes)

19. Re: Foucault pendulum circuit (score: 250)

Author: John Denker <jsd@AV8N.COM>

Date: Mon, 14 Nov 2005 00:47:12 -0500

John SOHL wrote: I've started to design my own system using LEDs and photodiodes Good plan so far. with a simple logic circuit to trigger a timer to drive a power MOSFET to turn on the magnet. When I

/archives/2005/11_2005/msg00165.html (7,854 bytes)

20. Re: Foucault pendulum circuit (score: 250)

Author: Michael Edmiston <edmiston@BLUFFTON.EDU>

Date: Mon, 14 Nov 2005 01:24:54 -0500

I'm guessing the "feedback" John Sohl was talking about is unintentional feedback as opposed to designed feedback. If that is not true, ignore the rest of this message. If you try to square-pulse a c

/archives/2005/11_2005/msg00166.html (5,546 bytes)

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