Background
Ormond was born on January 11, 1847 in Pekin, Illinois, United States, son of the Rev. Elijah and Sophia Louise (Creighton) Stone, and a brother of Melville Elijah Stone.
(This book was digitized and reprinted from the collection...)
This book was digitized and reprinted from the collections of the University of California Libraries. It was produced from digital images created through the libraries’ mass digitization efforts. The digital images were cleaned and prepared for printing through automated processes. Despite the cleaning process, occasional flaws may still be present that were part of the original work itself, or introduced during digitization. This book and hundreds of thousands of others can be found online in the HathiTrust Digital Library at www.hathitrust.org.
https://www.amazon.com/Micrometrical-measurements-observed-refractor-September/dp/B009XR1QVS?SubscriptionId=AKIAJRRWTH346WSPOAFQ&tag=prabook-20&linkCode=sp1&camp=2025&creative=165953&creativeASIN=B009XR1QVS
(This historic book may have numerous typos and missing te...)
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1895 Excerpt: ...+ '(y + y") U'-f + ¥'-yf is a minimum. Therefore in order to have a minimum value, f(x) or y must satisfy this differential equation; however, when y satisfies this differential equation, we do not always have a minimum, as will be shown later. Differentiate (B) with regard to x, and we have dy dh/ dsu dx'd1?ydxh' or dy d frfV dx dx i dx2-----L. y l_y dx2 d2v That is, y =? where c2 is the constant of integration. X _ X Since y = ec, and y = e c are two solutions of this last differential equation, the most general solution is y = cxe-+ c2e », where c, and c, are also constants. This last equation is the equation of the catenary. 4. Thus, by the help of the theory of maxima and minima, we have, it is true, come to a certain result; but, on the other hand, we have yet to ask whether this curve gives a true minimum, and owing to the manner in which we have come to the result, we have yet to see whether this curve only in a definite portion or throughout its whole extent possesses the property required in the problem. That we are justified in insisting upon this last statement is seen from what follows later, where it will be shown that the curve found above satisfies the required conditions only between given limits. A simple consideration shows that the method we have followed above is not at all rigorous; since it presupposes, which of itself is not admissible, that the curve which satisfies the problem is regular in its whole extent, since otherwise the portions of curve between the two points (x--Jx, y') and (x, y) could not be replaced by straight lines joining these two points. 5. The characteristic difference between problems relative to maxima and minima and the problems which have to do with the calculus of variations, consists in the f...
https://www.amazon.com/Annals-mathematics-9-10-Ormond-Stone/dp/1130710238?SubscriptionId=AKIAJRRWTH346WSPOAFQ&tag=prabook-20&linkCode=sp1&camp=2025&creative=165953&creativeASIN=1130710238
(This is a reproduction of a book published before 1923. T...)
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ Annals Of Mathematics, Volumes 7-8 Ormond Stone, Joseph Henry Maclagan Wedderburn, Solomon Lefschetz, Harvard University, University of Virginia, Princeton University, Institute for Advanced Study (Princeton, N.J.) Ormond Stone, Joseph Henry Maclagan Wedderburn, Solomon Lefschetz Princeton University Press, 1893 Education; Teaching Methods & Materials; Mathematics; Education / Teaching Methods & Materials / Mathematics; Juvenile Nonfiction / Mathematics / General; Mathematics; Mathematics / Calculus; Mathematics / General; Mathematics / History & Philosophy; Mathematics / Mathematical Analysis; Mathematics / Study & Teaching
https://www.amazon.com/Annals-Mathematics-Volumes-Ormond-Stone/dp/1173901515?SubscriptionId=AKIAJRRWTH346WSPOAFQ&tag=prabook-20&linkCode=sp1&camp=2025&creative=165953&creativeASIN=1173901515
(This is a reproduction of a book published before 1923. T...)
This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. ++++ The below data was compiled from various identification fields in the bibliographic record of this title. This data is provided as an additional tool in helping to ensure edition identification: ++++ Motions Of The Solar System, Volume 464; Motions Of The Solar System; Ormond Stone reprint Ormond Stone Printed at the Salem press, 1888 Science; Astronomy; Science / Astronomy; Solar system
https://www.amazon.com/Motions-Solar-System-Ormond-Stone/dp/1272921379?SubscriptionId=AKIAJRRWTH346WSPOAFQ&tag=prabook-20&linkCode=sp1&camp=2025&creative=165953&creativeASIN=1272921379
(This book was originally published prior to 1923, and rep...)
This book was originally published prior to 1923, and represents a reproduction of an important historical work, maintaining the same format as the original work. While some publishers have opted to apply OCR (optical character recognition) technology to the process, we believe this leads to sub-optimal results (frequent typographical errors, strange characters and confusing formatting) and does not adequately preserve the historical character of the original artifact. We believe this work is culturally important in its original archival form. While we strive to adequately clean and digitally enhance the original work, there are occasionally instances where imperfections such as blurred or missing pages, poor pictures or errant marks may have been introduced due to either the quality of the original work or the scanning process itself. Despite these occasional imperfections, we have brought it back into print as part of our ongoing global book preservation commitment, providing customers with access to the best possible historical reprints. We appreciate your understanding of these occasional imperfections, and sincerely hope you enjoy seeing the book in a format as close as possible to that intended by the original publisher.
https://www.amazon.com/Annals-Mathematics-Volumes-Ormond-Stone/dp/B00B7PL91Q?SubscriptionId=AKIAJRRWTH346WSPOAFQ&tag=prabook-20&linkCode=sp1&camp=2025&creative=165953&creativeASIN=B00B7PL91Q
Astronomer educator mathematician
Ormond was born on January 11, 1847 in Pekin, Illinois, United States, son of the Rev. Elijah and Sophia Louise (Creighton) Stone, and a brother of Melville Elijah Stone.
Despite what must have been limited school facilities, he was able to secure a good preliminary education and from the first excelled in mathematics. He entered the University of Chicago in 1866 and studied there until 1870. In this latter year he received the degree of A. M. from the University of Chicago.
Stone was instructor at Racine College, Wisconsin, in 1867-68, and taught at Northwestern Female College, Evanston, Illinois, in 1869. His ability in mathematics led to his appointment as assistant in the United States Naval Observatory in 1870, where he remained until 1875.
While he was at the Naval Observatory his work was largely with the two transit circles and in the routine computing. Simon Newcomb was so impressed by his ability that Stone was strongly recommended for the directorship of the Cincinnati Observatory, which position he occupied from 1875 to 1882. The eleven-inch refractor there was used by him and his assistants in the discovery and measurement of southern double stars, though the measures were made under considerable difficulties from lack of a driving clock.
He also took an important part in the bringing about of the adoption of standard-time belts. While at Cincinnati he displayed what was to be his outstanding contribution to science, namely the sagacity to choose young assistants, the most of whom were destined to attain a high place in astronomy or other professions. It is believed that no astronomer of his generation surpassed him in this respect. Meantime Leander McCormick decided to present to an institution in his native state, Virginia, the greatest refractor in the world.
The University of Virginia was finally chosen to receive the gift and the telescope of 26. 3 inches' aperture was placed there, the observatory being given the name of the donor. Stone was appointed director and began his new duties in 1882.
In fact, his best talents lay rather in mathematical than observational astronomy. Besides what appears in the publications of the three observatories with which he was connected, he contributed over a hundred shorter articles to scientific journals.
He retired on the Carnegie Foundation in 1912 and lived on his farm at Clifton Station, Virginia, until his death, taking an active part in the local affairs of his county. He was struck and instantly killed by an automobile, at which time he was just beginning his eighty-seventh year.
(This book was originally published prior to 1923, and rep...)
(This book was digitized and reprinted from the collection...)
(This historic book may have numerous typos and missing te...)
(This is a reproduction of a book published before 1923. T...)
(This is a reproduction of a book published before 1923. T...)
He took the greatest interest in the religious, social, and educational life of Virginia and had a prominent part in the improvement of the public-school system.
He was a member of the American Association for the Advancement of Science, a member of the American Astronomical, and Astrophysical Society, now known as the American Astronomical Society (Councilor 1899-1909), and the American Mathematical Society (Councilor 1897), among many other academic societies. He was also a member of the Virginia State Teachers' Association.
No one could associate with him closely without having the deepest respect for his character. He was a friendly person and thoroughly enjoyed the companionship of others.
On May 31, 1871, he married Catharine Flagler of Washington, who died on January 8, 1914, and, on June 9, 1915, he married Mary Florence Brennan of Lansing, Michigan, who died in 1932. He had no children.