Search results
Results from the WOW.Com Content Network
A copper film (the electrotype) grows onto the electrically conducting coating of the mold. Electrotyping (also galvanoplasty) is a chemical method for forming metal parts that exactly reproduce a model. The method was invented by Moritz von Jacobi in Russia in 1838, and was immediately adopted for applications in printing and several other ...
Daniell cell. Daniell cells, 1836. The Daniell cell is a type of electrochemical cell invented in 1836 by John Frederic Daniell, a British chemist and meteorologist, and consists of a copper pot filled with a copper (II) sulfate solution, in which is immersed an unglazed earthenware container filled with sulfuric acid and a zinc electrode.
Stereotype (printing) A stereotype mold ("flong") being made. Stereotype casting room of the Seattle Daily Times, c. 1900. In printing, a stereotype, [note 1] stereoplate or simply a stereo, is a solid plate of type metal, cast from a papier-mâché or plaster mould taken from the surface of a forme of type. [1]: stereotype The mould was known ...
May 9 – Royal Agricultural Society of England established. Proteins discovered by Gerardus Johannes Mulder [1] and named by Jöns Jakob Berzelius. [2] Matthias Schleiden discovers that all living plant tissue is composed of cells. Andrew Smith begins publication of Illustrations of the Zoology of South Africa.
Moritz Hermann von Jacobi, russified from 1837 as Boris Semyonovich Yakobi (Russian: Борис Семёнович Якоби; 21 September 1801 – 10 March 1874) was a Prussian and Russian Imperial engineer and physicist of Jewish descent. Jacobi worked mainly in the Russian Empire. He furthered progress in galvanoplastics, electric motors ...
Electroforming. Electroforming is a metal forming process in which parts are fabricated through electrodeposition on a model, known in the industry as a mandrel. Conductive (metallic) mandrels are treated to create a mechanical parting layer, or are chemically passivated to limit electroform adhesion to the mandrel and thereby allow its ...
Signature. Christopher Latham Sholes (February 14, 1819 – February 17, 1890) was an American inventor who invented the QWERTY keyboard, [2] and, along with Samuel W. Soule, Carlos Glidden and John Pratt, has been contended to be one of the inventors of the first typewriter in the United States. [3][4][5] He was also a newspaper publisher and ...
Download QR code; Print/export Download as PDF; Printable version; From Wikipedia, the free encyclopedia. Redirect page. Redirect to: Electrotyping; Retrieved from ...