File:NSRW Air Pump2.png

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Description

In Fig. is given a diagram of the best of these mercury pumps, the one devised by Sprengel.

The supply of mercury is contained in the reservoir on the left. It flows over into the bulb B, where it falls in drops into the long tube on the right. These drops entrap between them the air in B. The mercury which runs out is collected and poured back into reservoir on the left. In this manner practically all the air can be removed from the bulb B, and hence from any vessel R, which may be connected with B. At M is a manometer which indicates the pressure in the vessel R, which is being exhausted. A pump of this type is capable of producing a vacuum in which the pressure is only 100,000,000th of an atmosphere.

[1]
Date
Source s:The New Student's Reference Work
Author Shanel
Permission
(Reusing this file)		 Public domain, first published in the United States before 1923.
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This file has been extracted from an original image in The New Student's Reference Work: File:LA2-NSRW-1-0053.jpg.

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Public domain

The author died in 1936, so 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 80 years or fewer.

This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

  1. ↑ http://commons.wikimedia.org/wiki/File:LA2-NSRW-1-0054.jpg

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10 September 2006

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current04:45, 10 September 2006Thumbnail for version as of 04:45, 10 September 2006326 × 758 (135 KB)Shanel{{Information |Description= |Source=s:The New Student's Reference Work |Date=September 10, 2006 |Author=Shanel |Permission=Public domain, first published in the United States before 1923. |other_versions=none }} {{PD-US}} [[Category:NS

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