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The Bakerian Lecture. - Recherches in Spectrum-Analysis in connection with the Spectrum of the Sun. No. III. Received November 20, - Read November 27, 1873.
(London, Taylor and Francis, 1874). 4to. No wrappers as extracted from ""Philosophical Transactions"", Vol. 164 - Part II, Pp. 479-494 a. 3 large folded plates in Heliotype of sun-spectra. Textillustr.
First printing of this paper in which Lockyer analyses the spectra of the sun, comparing them with the spectra obtained of elements on the earth in order to detect the elements in the solar layers. Lockyer was the first to detect Helium in the sun 1868 (printed 1870), and he was a pioneer in the study of spectrum analysis of the sun. ""Joseph Norman Lockeyer (1836-1920), pioneer English astrophysicist. He made importent advances in the field of solar and stellar physics, and is responsible for naming the element helium, for emphasizing the two-branch theory of stellar evolution, and (jointly with Janssen) for the method of observing solar prominences without an eclipsee."" (Source Book in Astronomy).
The Chemistry of the Sun.
London, Macmillan and Co., 1887. Royal8vo. Orig. full cloth. Gilt lettering to spine. A small paperlabel pasted to spine. XX,457,(1) pp., 133 textillustrations. Internally clean and fine.
First edition of a major work by Lockyer in which he presents his dissociation hypothesis and the evidence for it. (The theory states that the atoms of elements are groupings of smaller constituents, which he used to explain some simple facts of the spectra). Lockyer is also well known for his creation of the scientific journal ""Nature"" in 1869.""Joseph Norman Lockeyer (1836-1920), pioneer English astrophysicist. He made importent advances in the field of solar and stellar physics, and is responsible for naming the element helium, for emphasizing the two-branch theory of stellar evolution, and (jointly with Janssen) for the method of observing solar prominences without an eclipsee."" (Source Book in Astronomy).
On the Causes which Produce the Phenomena of New Stars.
(London, Harrison and Sons, 1892). 4to. No wrappers as extracted from ""Philosophical Transactions"" Year 1891, Volume 182 - Series A. Pp. 397-448. Textillustrations.
First appearance of one of Lockyer's importent papers on stellar evolution.""Lockyer's scheme of stellar development has been modified in many importent details, but its basic principle. of both rising and falling temperatures in the life history of a star, is the central idea of our present theory of stellar evolution.""""Joseph Norman Lockeyer (1836-1920), pioneer English astrophysicist. He made importent advances in the field of solar and stellar physics, and is responsible for naming the element helium, for emphasizing the two-branch theory of stellar evolution, and (jointly with Janssen) for the method of observing solar prominences without an eclipsee."" (Source Book in Astronomy).
Spectroscopic Observations of the Sun.- No. II. Received November 19,- Read November 19 and 26, 1868. (With additional notes Nov. 26, April 9, 1869, Oct. 10, 1869).
(London, Taylor and Sons, 1870). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1869, Vol. 159 - Part I. Pp. 425-444 and 2 lithographed plates (1 with the spectrum of helium, 1 with his spectroscope (not requiring eclipses to function)). Clean and fine.
First appearance of this milestone paper in chemistry, physics and astronomy, announcing the discovery of helium in the sun and naming it 'helium' for Helios, the Greek God of the Sun. In the same paper he demonstrates his invention of the spectroscope by which the prominences of the sun could be observed and studied without an eclipse by leading the light from the very edge of the sun through a prism. - Helium was not discovered on the earth before 1895 by William Ramsay, and it was Crookes who established its identity with the helium Lockyer observed in the spectrum of the sun.""This (the last discovery) was announced on the same day by the French astronomer Janssen, who was in India observing a total eclipse. As a result, the French government some ten years later struck a medallion showing the heads of both scientists.By that time, the two men had made a much more dramatic discovery at the same time, this time in cooperation. Janssen, studying the spectrum ofthe sun during the eclipse, had noted a fine line he did not recognize. he send a report on this to Lockyer, an acknowledges expert on solar spectra. Lockyer compared the reported position of the line with lines of known elements, concluding that it must belong to a yeat unknown element, possibly not even existing on the earth. He named the element, from the Greek word for the sun.""(Asimov).
On the Photographic Spectra of some of the Brighter Stars. Received November 3, - Read December 8, 1892.
(London, Harrison and Sons, 1893). 4to. No wrappers as extracted from ""Philosophical Transactions"" Year 1893, Volume 184 - Series A. Pp. 675-726 a. 5 large folded plates showing the spectra of different stars.
First appearance of an importent investigation on stellar physics in which he tries to classify stars according to their spectral differences, deducing differences in temperature etc.etc. ""Lockyer's scheme of stellar development has been modified in many impiortent details, but its basic principle, of both rising and falling temperatures in the life history of a star, is the central idea of our present theories of stellar evolution.""(A Source Book in Astronomy"", p.353).""Joseph Norman Lockeyer (1836-1920), pioneer English astrophysicist. He made importent advances in the field of solar and stellar physics, and is responsible for naming the element helium, for emphasizing the two-branch theory of stellar evolution, and (jointly with Janssen) for the method of observing solar prominences without an eclipsee."" (Source Book in Astronomy).
Researches in Spectrum-Analysis in connection with the Spectrum of the Sun.- No. V. Received April 20, - Read May 23, 1878.
(London, Harrison and Sons, 1881). 4to. No wrappers as extracted from ""Philosophical Transactions"" Year 1881, Volume 172. Pp. 561-576 a. 1 double page folded photographic plate of the spectrum of the sun (autotyped).
First appearance of this paper in which Lockyer explores the photographic technics in relation to the spectra of the sun and the photographic processes employed.""Joseph Norman Lockeyer (1836-1920), pioneer English astrophysicist. He made importent advances in the field of solar and stellar physics, and is responsible for naming the element helium, for emphasizing the two-branch theory of stellar evolution, and (jointly with Janssen) for the method of observing solar prominences without an eclipsee."" (Source Book in Astronomy).
The Total Eclipse of the Sun, April 16th, 1893 - Report and Discussion of the Observations relating to Solar Physics.
(London, Harrison and Sons, 1897). 4to. No wrappers as extracted from ""Philosophical Transactions"" Year 1896, Volume 187. Pp. 551-618 a. 4 plates (2 double-page) reproductions of photographs taken. many textillustrations describing apparatus etc.
First edition. The paper interpretates the photographs and the spectra taken of the sun under the total eclipse in 1893.""Joseph Norman Lockeyer (1836-1920), pioneer English astrophysicist. He made importent advances in the field of solar and stellar physics, and is responsible for naming the element helium, for emphasizing the two-branch theory of stellar evolution, and (jointly with Janssen) for the method of observing solar prominences without an eclipsee."" (Source Book in Astronomy).
ASTRONOMIA.
Tradotta e in parte rifatta da E. Sergent e riveduta da G.V. Schiaparelli. Hoepli, Milano, 1878. In-24 gr., tela editoriale, pp. V,156, con 44 figg. nel t. e in 1 tavola f.t. Prima edizione. Ben conservato.
