Jump to content

File:Wilberforce pendulum.jpg

Page contents not supported in other languages.
This is a file from the Wikimedia Commons
From Wikipedia, the free encyclopedia

Original file (263 × 730 pixels, file size: 21 KB, MIME type: image/jpeg)

Summary

Description
English: Photo of a Wilberforce pendulum, a coupled mechanical oscillator consisting of a weight suspended from a helical spring that is free to both bob up and down and rotate back and forth about its vertical axis with torsional vibrations. It is mounted on a stand for use in physics demonstrations. The weight consists of two adjustable masses mounted on a horizontal threaded rod that can be screwed in or out to adjust the torsional vibration period of the weight.
Date
Source Downloaded 2009-10-18 from W. E. Dalby (Feb. 10, 1908) Balancing of Reciprocating Engines in Proceedings of the Institution of Mechanical Engineers, 1908, Part 1, London Plate 9, Fig. 5, following p. 550, on Google Books
Author W. E. Dalby
Permission
(Reusing this file)		 Public domain: Dalby died in 1936

Licensing

Public domain

This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.

You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
 Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information).
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

Captions

Add a one-line explanation of what this file represents

Items portrayed in this file

depicts

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current08:38, 18 October 2009Thumbnail for version as of 08:38, 18 October 2009263 × 730 (21 KB)Chetvorno{{Information |Description={{en|Photo of a Wikipedia:Wilberforce pendulum, a coupled mechanical oscillator consisting of a weight suspended from a helical spring that is free to both bob up and down and rotate back and forth with torsional vibrations

The following page uses this file:

Global file usage

The following other wikis use this file:

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

Retrieved from "https://en.wikipedia.org/wiki/File:Wilberforce_pendulum.jpg"