File:Gold leaf electroscope with ground strips.png

Original file (479 × 607 pixels, file size: 28 KB, MIME type: image/png)

Captions

English

Add a one-line explanation of what this file represents

Description	Drawing of a gold-leaf electroscope from around 1900. The grounded metal strips flanking the leaves improve sensitivity and are a protective device. If the delicate leaves receive an excessive charge, they will touch the strips and discharge, rather than tearing. Alterations: removed caption, removed attached collector rod since it was irrelevant and confusing.
Date	1910
Source	Downloaded from John William Moore (1910) Meteorology: Practical and Applied, 2nd Ed., Rebman Ltd., London, p.297, fig.86 on Google Books
Author	John William Moore
Permission (Reusing this file)	Public domain - author died in 1937

	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.

PDMCreative Commons Public Domain Mark 1.0falsefalse

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

	Date/Time	Thumbnail	Dimensions	User	Comment
current	21:29, 14 December 2007		479 × 607 (28 KB)	Chetvorno (talk \| contribs)	{{Information \|Description=Drawing of a gold-leaf electroscope from around 1900. The grounded metal strips flanking the leaves improve sensitivity and are a protective device. If the delicate leaves receive an excessive charge, they will touch the strip

You cannot overwrite this file.

The following page uses this file:

The following other wikis use this file: