Identifier: s03philosophicalmag23londuoft (find matches)
Title: The Philosophical magazine; a journal of theoretical, experimental and applied physics
Year: 1798 (1790s)
Authors:
Subjects: Physics
Publisher: London Taylor & Francis (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: Ontario Council of University Libraries and Member Libraries

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
us I found that a piece of colourlessFrench plate-glass transmitted SGG rays out of 1000. Description of the histrnment. First, of the glass part.—The tithonometer consists of a glass tube bent into the formof a siphon, in which chlorine anil hydrogen can be evolvedfrom muriatic acid, containing clilorine in solution, by theagency of a voltaic current. It is rejnesented by fig. 1, whereab c\s a clear and thin tube four-tenths of an inch externaldiameter, closed at the end a. At d a circular piece of metal,an inch in diameter, which may be called the stage, is fastenedon the tube, the distance from d to a being 2-9 inches. Atthe point .r, which is twt) inches anti a (juarter from d, twoniatina wires, x and y, are fused into the glass, and enteringnito the interior of the tube, are destined to furnish the siip- Jily of chlorine anil hydrogen ; from the stage d to the point», the inner bend of the tube, ib 2G inches, and from that 408 Professor Drapers Description of the Tithonometer.
Text Appearing After Image:
Professor Drapers Description of the Titkonometer. 409 point to the top of the siphon c, the distance is three inchesand a half. Through the glass at z, three quarters of aninch from c, a third platina wire is passed; this wire termi-nates in the little mercury cup r, and a and 1/ in the cups 2^and q respectively. Things being thus arranged, the instrument is filled withits fluid prepared, as will presently be described; and as thelegs ab, b c are not parallel to each other, but include an an-gle of a few degrees, in the same way that Ures eudiometeris arranged, there is no difficulty in transferring the liquid tothe sealed leg. Enough is admitted to fill the sealed leg andthe open one partially, leavuig an empty space to the top ofthe tube at c of two and three quarter inches. A stout tube, six inches long and one-tenth of an inch in-terior diameter, cj\ is now fused on at c. Its lower end opensinto the main siphon tube; its upper end is turned over atJl and is narrowed to a fine ter

Note About Images