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Original file (429 × 750 pixels, file size: 48 KB, MIME type: image/jpeg)
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Vacuum tube for Beckman pH Meter
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| Photographer |
Staff photographer |
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| Title |
Vacuum tube for Beckman pH Meter |
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| Description |
Vacuum tube for Beckman pH Meter, supported on a plexiglass stand. Light-bulb shaped glass tube; majority of outer glass is covered in silver coating; top of tube has a yellowish tint and exposes inside of tube; inside of tube has a copper coil and other metal prongs; a silver cap protrudes from the tube top; bottom of tube is supported by a black plastic base; four metallic prongs/plugs extend from this base; a pliable metal wire with a loop fastener at its end is coiled around the tube. 1950s, Made by Beckman Instruments. |
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| Date | 2006 | ||||||||||||||||||||
| Collection |
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| Accession number |
2006.519 |
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| Credit line | Science History Institute. | ||||||||||||||||||||
| Notes | Image downloaded with permission from the Science History Institute, as part of the Wikipedian in Residence initiative. | ||||||||||||||||||||
| Source | Science History Institute | ||||||||||||||||||||
| Permission (Reusing this file) |
   This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. Attribution: Science History Institute
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 17:36, 3 April 2014 | | 429 × 750 (48 KB) | Mary Mark Ockerbloom | {{Photograph |photographer =Staff photographer |title = |description =Vacuum tube for Beckman pH Meter |depicted people = |depicted place = |date =2006 |medium = |dimensions =... |
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