File:Cermets 1 Steatite Ingredients Being Weighed 2012 002 5979.tiff

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Steatite Ingredients Being Weighed   (Wikidata search (Cirrus search) Wikidata query (SPARQL)  Create new Wikidata item based on this file)
Photographer
Herb Radin and Associates
Title
Steatite Ingredients Being Weighed
Description

1. Steatite, the ceramic composition used as a base for the Helitrim trimming potentiometer elements, is prepared in specially constructed, temperature-controlled rooms. Quality raw materials (high purity talc and clay) of which the steatite is composed are first precisely measured. Ingredients are then thoroughly mixed with water in a ball milling process to make a homogeneous slurry. The mixture is then piped under pressure into a filter press where the moisture content is reduced to a predetermined level. Batches are isolated from each other throughout the entire steatite process. In addition all tools, equipment and facilities are thoroughly cleaned between batches. This extra care results in a higher quality and a more reliable end product.

Published without a copyright notice in "The making of a cermet trimmer, 1966" in Beckman Instruments' newsletter Helinews, number 36, Spring 1966, pp. 4-5. Part of a two-page spread detailing the process of manufacturing cermet trimmers.
Date 1966
date QS:P571,+1966-00-00T00:00:00Z/9
institution QS:P195,Q5090408
Accession number
Beckman Historical Collection
Credit line Science History Institute.
Notes Image downloaded with permission from the Science History Institute, as part of the Wikipedian in Residence initiative.
Source https://digital.sciencehistory.org/works/9019s324t
Permission
(Reusing this file)
This work is in the public domain in the United States because it was published in the United States between 1929 and 1977, inclusive, without a copyright notice. For further explanation, see Commons:Hirtle chart as well as a detailed definition of "publication" for public art.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.

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Date/TimeThumbnailDimensionsUserComment
current00:23, 18 April 2020Thumbnail for version as of 00:23, 18 April 20201,060 × 636 (2.57 MB)wikimediacommons>Mary Mark Ockerbloom== {{int:filedesc}} == {{Photograph |photographer ={{unknown}} |title = Steatite Ingredients Being Weighed |description = 1. Steatite, the ceramic composition used as a base for the Helitrim trimming potentiometer elements, is prepared in specially constructed, temperature-controlled rooms. Quality raw materials (high purity talc and clay) of which the steatite is composed are first precisely measured. Ingredients are then thoroughly mixed with water in a ball...

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