Comentarios de la gente - Escribir un comentario
No encontramos ningún comentario en los lugares habituales.
Otras ediciones - Ver todas
Journal of the Chemical Society, Tema 1,Páginas 1-776
Chemical Society (Great Britain)
Vista de fragmentos - 1969
acetic acid action added addition alcohol alkali ammonia ammonium amount analysis appears aqueous atom barium base benzene boiling bromine calculated carbon cent chemical chloride chloroform cold colour complete compound concentrated considerable constant containing cooling crystallised crystals decomposed decomposition derivative described determined difference dilute dissolved distilled dried effect ether ethyl evaporated examined excess experiments fact formation formed formula further gave given gives grams heated hydrogen indicate iodide latter less light liquid means melting melting point mercury method Meyer mixed mixture namely needles nitrate nitrogen normal numbers obtained oxide oxygen portion possible potassium precipitate prepared present pressure probably pure quantity reaction readily removed requires residue salt separated showed shown silver similar sodium soluble solution substance sulphate sulphur dioxide sulphuric acid takes temperature tion Trans treated tube weight yellow yield
Página 568 - To decompose the metals, then, to reform them, to change them from one to another, and to realise the once absurd notion of transmutation are the problems now given to the chemist for solution.
Página 569 - System," and although he must have heard of the electrolytic decomposition of water by Nicholson and Carlisle in 1800, nothing apparently could shake his conviction of the essential and inherent truth of the conception of phlogiston. The last of his published writings was his memoir on " The Doctrine of Phlogiston established, and that of the Composition of Water refuted.
Página 568 - Wollaston ; lastly, glance but at the new, the extraordinary powers which the chemist of our own nation put in action so successfully for the reduction of the alkalies and earths, and you will then no longer doubt that powers still progressive and advanced may exist and put at some favourable moment the bases of the metals in our hands...
Página 529 - At the moment I am engaged in a research with Kirchhoff which gives us sleepless nights. Kirchhoff has made a most beautiful and most unexpected discovery : he has found out the cause of the dark lines in the solar spectrum, and has been able both to strengthen these lines artificially in the solar spectrum and to cause their appearance in a continuous spectrum of a flame, their positions being identical with those of the Fraunhofer's lines.
Página 522 - ... whilst at the same zenith distance the sun's chemical brightness is only 36'6 times as great. Hence the value of this light as a source of the chemically active rays for photographic purposes becomes at once apparent.
Página 578 - That he may have plenty of his ingredients, let him use 20 times as much quicksilver, 20 times as much platina, and in short of anything else he pleases to use : neither he nor I can make a single grain. Pray be careful in trying what it is he makes, for the mistake must happen by not trying it rightly. My reason for not saying where it was found was that I might make some advantage of it as I have a right to do.
Página 569 - le plus riche de tous les savans; et probablement aussi, le plus savant de tous les riches.
Página 183 - After consulting some of the most eminent chemical philosophers in this country, it has been judged most proper to suggest a name founded upon one of its obvious and characteristic properties — its colour, and to call it Chlorine, or Chloric gas.* Should it hereafter be discovered to be compound, and even to contain oxygene, this name can imply no error, and cannot necessarily require a change.
Página 568 - I see plainly," he once said, " that all these new-fangled associations will finally dismantle the Royal Society, and not leave the old lady a rag to cover her." And the frown of the masterful old President meant social ostracism to all who chose to disregard it. But, unlike his predecessor, Sir John Pringle, who, on a certain memorable occasion, confessed to George III. that he was unable to reverse the laws and operations of nature, and was then told he had better resign, Banks, if he could not...
Página 566 - The voltaic battery was an alarm bell to experimenters in every part of Europe ; and it served no less for demonstrating new properties in electricity, and for establishing the laws of this science, than as an instrument of discovery in other branches of knowledge ; exhibiting relations between subjects before apparently without connection, and serving as a bond of unity between chemical and physical philosophy.