Science and Life: Aberdeen AdressesE. P. Dutton, 1920 - 229 páginas |
Dentro del libro
Resultados 1-5 de 18
Página 91
... separated from it by prolonged and tedious fractionation processes . Chemically it was normal in every respect , and its chemical character could have been predicted from the Periodic Law before its discovery . But in addition to its ...
... separated from it by prolonged and tedious fractionation processes . Chemically it was normal in every respect , and its chemical character could have been predicted from the Periodic Law before its discovery . But in addition to its ...
Página 93
... separation is needed , as they diffuse away by themselves from the radioactive substance into the surrounding air and are the cause of many striking phenomena . The doctrine of the unchangeableness of the chemical elements is no fixed ...
... separation is needed , as they diffuse away by themselves from the radioactive substance into the surrounding air and are the cause of many striking phenomena . The doctrine of the unchangeableness of the chemical elements is no fixed ...
Página 94
... separated as often as desired . Once separated , the radioactivity of the products dies away or decays , and the apparently steady continuous emission of rays from the parent substance is due to an equilibrium , in which new radioactive ...
... separated as often as desired . Once separated , the radioactivity of the products dies away or decays , and the apparently steady continuous emission of rays from the parent substance is due to an equilibrium , in which new radioactive ...
Página 95
... separated uranium from radium and everything else completely and left it to itself , in the course of years or centuries a new crop of radium would be gradually formed . The case of radium is specially interesting as it has been ...
... separated uranium from radium and everything else completely and left it to itself , in the course of years or centuries a new crop of radium would be gradually formed . The case of radium is specially interesting as it has been ...
Página 112
... . By simple purification , by chemical and physical means , constituents respon- sible for the greater part of the radioactivity of THORIUM PRODUCTS 113 thorium can be separated , and as 112 CONCEPTION OF THE CHEMICAL ELEMENT.
... . By simple purification , by chemical and physical means , constituents respon- sible for the greater part of the radioactivity of THORIUM PRODUCTS 113 thorium can be separated , and as 112 CONCEPTION OF THE CHEMICAL ELEMENT.
Otras ediciones - Ver todo
Términos y frases comunes
a-particle Aberdeen actinium active æsthetic ancient animal Arts atomic number atomic weight B-ray bismuth branch British Science Guild Carnegie Trust cent century chemical character chemical elements chemist chemistry classical coal commercial education conception creative definite direct discovery disintegration electricity electrons emanation energy evolved existence expelled experimental external Faculty FREDERICK SODDY fundamental H. H. Asquith helium hitherto human ideals inanimate universe inanimate world investigation ionium isotopes J. J. Thomson knowledge known labour lead living mass material means mechanism ment million mind minerals modern nation nature original past Periodic Law periodic table philosophy physical pitchblende polonium practical present problem processes pure quantity radio-elements radioactive change radium radium-C recognised regard scientific study Scotland separated Soddy spectroscopic spectrum spirit study and research subjects teaching technical or commercial thallium thought tion to-day transmutation truth ultimate University of Aberdeen uranium and thorium wealth whole
Pasajes populares
Página 170 - Flower in the crannied wall, I pluck you out of the crannies, I hold you here, root and all, in my hand, Little flower—but if I could understand What you are, root and all, and all in all, I should know what God and man is.
Página 55 - the sufferings of mankind except veracity of thought and action, and the resolute facing of the world as it is when the garment of make-believe with which pious hands have hidden its uglier features has been stripped off.
Página 218 - towards the improvement and expansion of the Universities of Scotland, in the Faculties of Science and Medicine; also for improving and extending the opportunities for scientific study and research, and for increasing the facilities for acquiring a knowledge of History, Economics, English Literature, and Modern Languages, and such other subjects cognate to a technical
Página 193 - From the same source must come the greatly increased public provision that the Labour Party will insist on being made for scientific investigation and original research, in every branch of knowledge, not to say also for the promotion of music, literature and fine arts, which have been under Capitalism so greatly neglected, and upon which, so the
Página 208 - of the net annual income shall be applied towards the improvement and expansion of the Universities of Scotland, in the Faculties of Science and Medicine; also for improving and extending the opportunities for scientific study and research, and for increasing the facilities for acquiring a knowledge of History, Economics, English Literature, and Modern Languages, and such other subjects cognate to a technical
Página 90 - Natural causes, as we know, are at work which tend to modify, if they do not at length destroy, all the arrangements and dimensions of the earth and the whole solar system. But though in the course of ages catastrophes have occurred and may yet occur in the heavens, though ancient systems may be dissolved and new systems evolved out of their ruins, the molecules
Página 3 - Science is the great instrument of social change, all the greater because its object is not change but knowledge, and its silent appropriation of this dominant function, amid the din of political and religious strife, is the most vital of all the revolutions which have marked the development of modern civilisation."—AJ BALFOUR, Decadence, 1908. THE
Página 55 - in the conviction which has grown up with my growth and strengthened with my strength, that there is no alleviation to the sufferings of mankind except veracity of thought and
Página 193 - which have been under Capitalism so greatly neglected, and upon which, so the Labour Party holds, any real development of civilisation fundamentally depends. Society, like the individual, does not live by bread alone, does not exist
Página 176 - the establishment of a Faculty of Science in every university implies that of a corresponding number of Professorial Chairs, the incumbents of which need not be so burdened with teaching as to deprive them of ample leisure for original work.