KIRCHHOFF, Gustav Robert (1824-87). Untersuchungen über das Sonnenspectrum und die Spectren der Chemischen Elemente. KIRCHHOFF,Gustav Robert (1824-87). Untersuchungenüber das Sonnenspectrum und die Spectren der Chemischen Elemente … BesondererAbdruck aus den Abhandlungen der Königl. Akademie der Wissenschaften zu Berlin1861. Zweite, durch einen Anhang Vermehrte Ausgabe. Berlin: Ferd. Dümmler’sVerlagsbuchhandlung (Harrwitz und Gossman), 1862. First part (expanded) only(of 2). 4to (305 x 236mm). 2 folding lithographed plates of spectrums and oneengraved (plates spotted and stained). Original printed paper boards (lacksbackstrip, extremities rubbed, stained). Provenance: Dr. Sigismund[?]Eschwandner (old signature at foot of title); from the Collection of Peterand Margarethe Braune. “A series of delicate experiments by Kirchhoff(‘Investigation of the Solar Spectrum’), partly in conjunction with Bunsen …created the new science of spectroscopy. Sodium was the substance mostfrequently used in experiments with the spectrum, due to its volatility.Kirchhoff found that by exposing in the flame of a Bunsen burner a platinumwire dipped in salt he obtained in the spectrum the characteristic brightyellow lines of sodium superimposed on the spectrum of platinum. By repeatingthe process and introducing vaporized sodium between the incandescent wire andthe screen, the yellow lines were replaced by dark lines. With great ingenuityhe repeated the experiment with sunlight and got the same result. The fact thatthe dark lines were produced when a beam of light from an incandescent elementpassed through the same substance at a lower temperature suggested that thiswas due to absorption. In the solar spectrum, for example, the dark lines werecaused by absorption in the gases of the sun’s atmosphere. Further experimentsshowed that every glowing vapour produced a spectrum peculiar to itself andthereby made chemical analysis possible on a scale and with a degree ofaccuracy previously unknown. More than this, it brought, so to speak, thestellar universe into the laboratory and showed that the basic materials of theuniverse are everywhere the same” (PMM). Horblit 59; Norman 1219; PMM 278(b); Sparrow117. With H. Kayser & C. Runge’s Über die Spectren der Elemente(Berlin, 1888-89, 2 parts [only] in one vol., 9 plates of spectrums, originalboards). (2)
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TWOMBLY CY: (1928-2011) American Painter of large-scale and graffiti works. A good signed 9 x 6.5 card photograph by the American painter, the attractive image depicting his 1959 art work, oil on canvas, without title. Large bold dark brown pencil signature, `CY Twombly´, with his name alone, to a clear area at the heading of the image. EX
RICHTER CHARLES F.: (1900-1985) American Seismologist & Physicist, creator of the Richter magnitude scale. A rare T.L.S., Charles F. Richter, one page, 4to, Pasadena, California, 30th August 1948, to Paul C. Jones, on the printed stationery of the Seismological Laboratory at the California Institute of Technology. Richter writes, in part, 'Faults are shown on the large Geological Map of California issued by the State Division of Mines…..Another large scale map, compiled in 1922, and hence obsolete in some particulars, is obtainable from the Secretary of the Seismological Society of America…..' Accompanied by the original envelope. One extremely small, minor tear to the left edge of a fold, otherwise VG
GARNET-SET SERPENT NECKLACE, CIRCA 1845The head with bicoloured foliate decoration set with a cabochon garnet, with garnet eyes and suspending a cabochon garnet locket, on a highly articulated scale-like chain, mounted in gold, length 37.5cmFor further information on this lot please visit Bonhams.com
A Watson Edinburgh Compound Microscope,English, c.1900, signed to the rear of the foot 'W. WATSON & SONS 313 HIGH HOLBORN, LONDON 6533' on typical tripod base with plano-concave mirror focusing substage with Abbe-type cndenser, fully mechanical sage with vernier scales to X-Y movement and engraved scale around the edge, body tube with single drawer, with two eyepieces and single Watson 1in objective, in original French polished mahogany case.
A yellow metal cameo brooch depicting a Classical scene featuring a soldier guiding maidens, with Greek key border, diameter 6.5cm, approx 22.9g.Additional InformationThere is some loss to the setting to the bottom right. Tarnishing and marks throughout, with discolouration caused by fire scale. The actual cameo itself has a crack running through the bottom and it is also lightly inscribed to the back 'Jean'.
CRISPIN FULLER; a George III silver mustard, with double shell thumb piece and floral decorated rim, with an acanthus leaf and scale ground scroll handle, on three ball feet, with blue glass liner, London 1820, length 11cm, weight approx 4.5ozt/144cm.Additional InformationLid does not close fully. A few small dents to the gadrooning on the base section. Light age patina. Overall fair.
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