File:Arnold O. Beckman and William Ballhaus Sr. 1967 Feedback 2012 002 488 474299495.tiff
Appearance
Size of this JPG preview of this TIF file: 749 × 599 pixels. Other resolutions: 300 × 240 pixels | 600 × 480 pixels | 960 × 768 pixels | 1,280 × 1,024 pixels | 2,560 × 2,048 pixels | 3,202 × 2,562 pixels.
Original file (3,202 × 2,562 pixels, file size: 23.54 MB, MIME type: image/tiff, 2 pages)
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 20:11, 29 August 2019 | 3,202 × 2,562, 2 pages (23.54 MB) | Mary Mark Ockerbloom | == {{int:filedesc}} == {{Photograph |photographer = {{unknown}} |title = William F. Ballhaus, Sr. and Arnold O. Beckman |description = William F. Ballhaus, Sr. (standing) and Arnold O. Beckman (seated) Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH meter in 1934 and thus began a long career manufacturing scientific and medical instruments with National Technical Laboratories, Arnold O. Beckman, Inc., and Beckman Instrume... |
File usage
The following page uses this file: