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"BUNSEN, ROBERT & HENRY E. ROSCOE. - INTRODUCING THE ""BUNSEN BURNER"" AND THE ""ACTIONOMETER"".
Reference : 43322
(1855)
Photochemische Untersuchungen I.-VI. Abhandlung. (1. Erste Abhandlung - 2. Maassbestimmung der chemischen Wirkungen des Lichts. - 3. Erscheinungen der photochemischen Induction. - 4. Optische und Chemische Extinction der Strahlen. - 5. Die Sonne. - 6...
Leipzig, Johann Ambrosius Barth, 1855, 1857, 1859, 1862. Without wrappers as issued in ""Annalen der Physik und Chemie. Hrsg. von J.C. Poggendorff"". In 6 orig. parts (Heften) from vols. 96, 100 (2 Papers), 101, 108 a. 117. all with titlepage to the respective volumes. - The parts: pp. 373-512 a. 2 folded engraved plates - pp. 1-176 a. 2 engraved plates - pp. 481-660 a. 2 engraved plates. - pp. 161-320 a. 1 engraved plate. - pp. 193-368 a. 3 engraved plates. - pp. 529-660 a. 2 engraved plates.The Bunsen & Roscoe papers: pp. 373-394 - pp. 43-88 - pp. 481-516 - pp. 235-263 - pp. 193-273 - pp. 529-562. A small tear to one titlepage. All issues fine and clean.
First printing of these 6 papers constituting the classical photochemical researches, - the papers laid the foundation for the science of quantitative photochemistry.""Between 1852 and 1862 Bunsen collaborated with Sir Henry Roscoe on photochemical research involving the chemical combination of equal volumes of hydrogen and chlorine when they were illuminated.For this experiment they altered a reaction vessel devised by John Draper in 1843. Bunsen and Roscoe found that for some time after the experiment started - a time they called the induction period - no reation took place"" then the reaktion rate slowly increased until a constant rate, proportional to the intensity of the light source used, was reached. The effect of the incident light was related to the wavelenght and followed a law of inverse squares.....(they) determined that the energy of light radiated by the sun in one minute is equivalent to the energy needed for the conversion of 25x10 with a potens of 12 cubic miles of a hydrogen-chlorine mixture into hydrogen chloride.""(DSB II, pp. 589).The papers contains the description of the ACTIONOMETER, which measures the heating power of electromagnetic radiation. The main use is to measure solar energy for meteteorological applications, Bunsen and Roscoe made this invention in order to carry out their researches here.The famous ""BUNSEN BURNER"" is first described here (in vol. 100 pp. 84-86). This invention furnished Bunsen & Kirchhoff with a non-luminous gas-flame of failrly high temperature, in which chemical substances could be vaporized and a spectrum could be obtained, due purely and simply to the luminous vapour.Leicester & Klickstein ""A Source Book in Chemistry"", pp. 355-360).
Méthodes gazométriques
Paris, Victor Masson, 1858, in-8, X-[2]-320 pp, Demi-chagrin écrasé vert de l'époque, dos à nerfs orné de filets à froid, tranches mouchetées, PREMIÈRE ÉDITION FRANÇAISE de ce traité de chimie de Robert Bunsen (1811-1899), traduit par Schneider et illustré de figures en noir dans le texte. Bunsen est un chimiste allemand réputé, célèbre pour plusieurs de ses inventions ou découvertes : le bec Bunsen, l'oxyde de fer hydraté (qui est un antidote à l'arsenic), mécanisme du geyser et un calorimètre à fusion de la glace. Étiquette et cachet de l'Institut catholique de Paris. Frottements, quelques pâles rousseurs. Couverture rigide
Bon X-[2]-320 pp.
Méthodes gazométriques
Paris, Victor Masson, 1858, , , demi-chagrin marron, dos à nerfs orné de filets dorés,tranches mouchetées,reliure de l'époque, Première édition française. Le seul publié par Bunsen dans lequel il rassemble l'ensemble de ses recherches sur les phénomènes gazeux. De trés nombreuses figures et schémas en noir dans le texte illustrent l'ouvrage. Sur le faux-titre, ex-libris imprimé d'un chimiste du nom de Thézard. Petite épidermure superficielle, mouillure marginale sur les premiers feuillet Couverture rigide
Bon
"BUNSEN, ROBERT & HENRY E. ROSCOE. - THE LAWS OF PHOTOCHEMICAL ACTION.
Reference : 42633
(1860)
Photo-chemical Researches. - Part IV. Received May 26 - Read May 26, 1859.
(London, Taylor and Francis, 1860). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1859 - Vol. 149 - Part II. Pp. 879-926. Clean and fine.
First appearance in English of a classic paper in the investigations of chemical reactions produced by lightrays. Their joined work - from 1855-59 - founded scientific photochemistry, by determining the phenomena of induction, deduction and extinction. They found that the beginning of light reaction takes place at first very slowly and that the velocity increases gradually until it attains a constant value, observing also that steam accelerates the action and that air retards it. They also gave proofs of the ""Law of Reciprocity
Gasometrische Methoden. Zweite umgearbeitete und vermehrte Audflage. Mit 70 in den text eingedruckten Holzstichen.
Braunschweig, Vieweg und Sohn, 1877. Contemp. hcalf. Gilt spine with gilt lettering. XI,387,(1) pp., textillustrations in woodcut. Internally clean and fine.
Second expanded edition of this milestone work. - Sparrow, Milestones of Science,33 (for the 1. ed.)
Chemische Analyse durch Spectralbeobachtungen. (In: Annalen der Physik und Chemie, vol. 110, pp.161-189). - [BEGINNING OF SPECTRUM ANALYSIS]
Leipzig: Johann Ambrosius Barth, 1860. 8vo. (207x124mm). Entire volume offered here in contemporary card board binding with hand written paper label to spine. A fine copy.
First edition of the paper which marks the beginning of spectrum analysis. In this work Kirchhoff and Bunsen announced their discovery of the two alkali metals, cesium and rubidium, with the aid of the spectroscope they had invented the year before. These discoveries inaugurated a new era in the means used to find new elements.
