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    • 1980

    These handwritten notes (by an unidentified author) detail the process by which Linus Pauling came to National Technical Laboratories to produce his oxygen meter design and how this lead to the formation of Arnold O.…

    • Genesis of MRI notebook
    • 1971-Sep-02 – 1971-Sep-07

    Notebook used by Paul C. Lauterbur to document the genesis of Magnetic Resonance Imaging (MRI). The notebook is titled, "Spatially Resolved Nuclear Magnetic Resonance Experiments - General Idea and Some Potential…

    • 1960s

    The notes, which appear to be written in the same hand, may have been authored by James C. Sternberg.

    The Glucose Analyzer was developed by James Sternberg in 1969 and was one of several very successful medical…

    • circa 1959 – 1966

    This folder contains notes written by Robert E. Kohler concerning chemical syntheses from R. B. Woodward's seminar lectures, specifically his Thursday Evening Seminars predating the formulation of the Woodward-Hoffmann…

    • 1959-May-26 – 1960-Jan-25

    Notebook #321 kept by Robert Bruce Merrifield from May 26, 1959 through January 25, 1960 in which he sets out his general conception of solid phase peptide synthesis. This work earned him a Nobel Prize in Chemistry in…

    • 1956

    Although the author is unknown, these instructions were most likely written by a Beckman Instruments employee. This glass electrode was used in Beckman pH meters.

    Arnold Beckman invented his first pH meter in 1934 at…

    • 1955-May-10

    The handwritten notes appear to be signed Noel Brayman.

    Glass electrodes were used in Beckman pH meters and various other instruments.

    • Remarks by Edwin P. Arthur before the Los Angeles Section of the American Ceramic Society March 9, 1955
    • 1955-Mar-09

    In his address to the American Ceramic Society, Edwin Arthur discussed the importance of pH--and, by extension, the measurement of pH with Beckman instruments--in the work of ceramists.

    Arnold Beckman invented his…

    • Final draft
    • 1955-Feb-25

    The foldering of this document suggests it was written by Edwin Arthur. As in a 1957 document, "beauty" was the first criteria to be evaluated.

    The glass electrodes were used in Beckman pH meters and various other…

    • 1954-Mar-28

    This series of handwritten and -drawn notes relates to the development of the Beckman DU-X2 spectrophotometer. One of the pages appears to be missing.

    The first Beckman Instruments DU Spectrophotometer was developed in…

    • 1954-Sep-26

    These handwritten notes on glass electrodes appear to be signed Noel B. Brayman.

    Glass electrodes were used in Beckman pH meters and various other instruments.

    • 1944-Jun-30
    • 1952-Feb
    • 1953-May

    The included reports are "The Pauling Oxygen Meter" by Reuben E. Wood and David P. Shoemaker, 1944; "Final Report Contract Nonr 388(00): Research Covering Develpment of an Onoxia Warning Device for Use in High-altitude…

    • 1946-Apr-08

    Handwritten and -drawn notes detail the resistors used in the Model F pH meter.

    Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an accurate…

    • 1930s

    The McLeod Gauge measures very low pressures of gasses. Its presence in this collection indicates that it was used during the production of Beckman Instruments' early pH meters. These calibrations may have been written…

    • 1936-Aug

    This report outlines the colorimetric and electrical ways to determine the pH of a solution and the various kinds of electrodes that can be used with electrical instruments. Beckman concludes that a method using glass…

    • 1934-Mar-22

    These calibrations and the diagram were done by W. E. Baier, Research Manager of the California Fruit Growers' Exchange. The McLeod Gauge measures very low pressures of gasses. Its presence in this collection indicates…

    • 1931-Aug-25

    The handwritten document was created in connection with Arnold O. Beckman's consulting work for Lee de Forest.

    • after 1849 – before 1895

    Third page of handwritten lecture notes with diagrams prepared by Louis Pasteur for a lecture to the National Academy of Medicine on the subject of crystal structures, tartaric acid, and arsenites. This work led to the…

    • after 1849 – before 1895

    Fourth page of handwritten lecture notes with diagrams prepared by Louis Pasteur for a lecture to the National Academy of Medicine on the subject of crystal structures, tartaric acid, and arsenites. This work led to the…

    • after 1849 – before 1895

    First page of handwritten lecture notes with diagrams prepared by Louis Pasteur for a lecture to the National Academy of Medicine on the subject of crystal structures, tartaric acid, and arsenites. This work led to the…

    • after 1849 – before 1895

    Second page of handwritten lecture notes with diagrams prepared by Louis Pasteur for a lecture to the National Academy of Medicine on the subject of crystal structures, tartaric acid, and arsenites. This work led to the…

    • after 1849 – before 1895

    Handwritten lecture notes with diagrams prepared by Louis Pasteur for a lecture to the National Academy of Medicine on the subject of crystal structures, tartaric acid, and arsenites. This work led to the field of…

    • 1891 – 1893

    Letter copying book containing accounting reports and business correspondence of Herbert H. Dow as head of the Midland Chemical Company, 1891-1893. The Midland Chemical Company was Dow's second commercial venture, and…

    • 1854 – 1855

    Notebook containing 49 pages of laboratory notes taken by Charles F. Chandler in Göttingen as a pupil of Professor Friedrich Wöhler in 1854 and in Berlin as a pupil of Professor Heinrich Rose in 1855. In these pages,…