Search Results
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Hand-drawn diagram for batteries used with a Beckman Model G pH Meter
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Instructions and a visual diagram for hooking up 3 #5540 batteries to power a Beckman Model G pH Meter. These three smaller batteries could replace a single, large 22.5 volt battery. This diagram was written on Bob…
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Portrait of Ezekiel [Ezéchiel] Weintraub
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Portrait of Ezekiel [Ezéchiel] Weintraub, a Russian-born chemist who was the first to produce 99 percent pure boron in 1909.
- Subject Portrait photography, Weintraub, Ezéchiel, Portraits
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Helipot Division: Production
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The production room at the Helipot Division of Beckman Instruments, Inc., where mostly women employees assemble potentiometers, dials, and other small devices.
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Portrait of Arnold O. Beckman (1900-2004)
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Dr. Arnold O. Beckman (1900-2004), pictured here with a DU Spectrophotometer, invented the first commercially successful electric pH meter in 1934. Thus began a long career manufacturing scientific and medical…
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[Joseph Louis] Gay-Lussac
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A half-length portrait of French scientist Joseph Louis Gay-Lussac (1778–1850).
- Artist Delpech-François, Séraphin 1778-1825
- Contributor Belliard, Zéphirin, 1798-1861
- Subject Gay-Lussac, Joseph Louis, 1778-1850
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The Honourable Robert Boyle
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Mezzotint of a portrait bust of the Irish chemist Robert Boyle (1627–1691) in an arched niche.
- Artist Faber, John, 1695?-1756
- Subject Boyle, Robert, 1627-1691
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Martin Folkes Esqr.
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A half-length seated portrait of Martin Folkes (1690–1754), English mathematician and president of the Royal Society.
- Artist Hogarth, William, 1697-1764
- Subject Folkes, Martin, 1690-1754
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Gerardus Blasius
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A half-length seated portrait of the 17th-century doctor Gerardus Blasius pointing to an anatomy figure in a book.
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Joseph Black, M.D.
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A framed portrait of Joseph Black (1728–1799), professor of chemistry at University of Glasgow, seated and holding a document.
- Artist Rogers, J.
- Contributor Raeburn, Henry, Sir, 1756-1823
- Publisher Blackie & Son
- Subject Black, Joseph, 1728-1799
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Tho. [Thomas] Graham
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A three-quarter-length portrait of Thomas Graham (1805–1869), the Scottish chemist who worked on the diffusion of gases.
- Subject Graham, Thomas, 1805-1869
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Ch. Darwin
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A Chine-collé portrait of English naturalist Charles Darwin (1809–1882) sitting in a wicker chair near a hanging tapestry.
- Engraver Johnson, Thomas
- Subject Darwin, Charles, 1809-1882
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Robt [Robert] Hare MD.
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A mid-length portrait of Robert Hare, MD.
- Subject Hare, Robert, 1781-1858
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Beckman IR-1 Spectrophotometer without case
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The Beckman Instruments IR spectrophotometers began as a request from the Office of Rubber Reserve to Arnold O. Beckman in 1942, asking for an infrared spectrophotometer that they could use to create rubber. Under this…