Archives of the Roentgen Ray, المجلد 11Rebman, 1907 |
طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
129 Shaftesbury Avenue action Alpha Alpha particle Alpha rays anticathode apparatus appear application Archives atom atony BELOT blood BORDIER cancer cathode cells cent centimetres colour cure dermatitis diagnosis disease distance dose effect electricity electrode electrolytic electroscope employed epithelioma examination experiments exposure fluorescence focus-tube give glands Glasgow HALL-EDWARDS heat high-frequency currents Holzknecht increase influence injection intensity iodoform ionization irradiation Journal JUBB lesion leucocytes leukæmia light London lupus malignant means measurement Medical ment metal method milliampères millimetres minutes months neoplasm neurasthenia normal observed obtained opsonic pain paper Paris particles pastille patient penetrating phosphorescence photographic placed plate position produced Professor quantity radiations radio-activity radio-therapy radiographs radium Ray and Allied reaction REBMAN recurrence ROBERT ABBE Roentgen rays Roncegno screen séance serum Shaftesbury Avenue showed skin solution spark stomach substance surface symptoms temperature therapeutic THURSTAN THURSTAN HOLLAND tint tion tissues treated tube tuberculosis tumour ulcer X rays X-ray treatment York
مقاطع مشهورة
الصفحة 305 - ... even so very hard as never to wear or break in pieces, no ordinary power being able to divide what God himself made one in the first creation.
الصفحة 151 - They produce the same effects in a much smaller degree as do the beta rays, but are more penetrating. The kind of conceptions to which these and like discoveries have led the modern physicist in regard to the character of that supposed unbreakable body —the chemical atom — the simple and unaffected friend of our youth — are truly astounding. But I would have you notice that they are not destructive of our previous conceptions, but rather elaborations and developments of the simpler views, introducing...
الصفحة 120 - London he made use of a small tube an inch long and of one-eighth bore, containing nearly the whole of his precious store, wrenched by such determined labour and consummate skill from tons of black shapeless pitch-blende. On his return to Paris he was one day demonstrating in his lecture room with this precious tube the properties of radium when it slipped from his hands, broke, and scattered far and wide the most precious and magical powder ever dreamed of by alchemist or artist of romance. Every...
الصفحة 169 - ... its maintenance, and had further devoted to that purpose considerable sums from its own Donation Fund and Government grant. Further aid for it was also received from private sources. From this Observatory at last has sprung, in the beginning of the present century, the National Physical Laboratory in Bushey Park, a fine and efficient scientific institution, built and supported by grants from the State, and managed by a committee of really devoted men of science who are largely representatives...
الصفحة 119 - Rontgen's rays ? He wrapped a photographic plate in black paper, and on it placed and left lying there for twenty-four hours some uranium salt. He had placed a cross, cut out in thin metallic copper, under the uranium powder, so as to give some shape to the photographic print should one be produced. It was produced. Penetrating rays were given off by the uranium : the black paper was penetrated, and the form of the copper cross was printed on a dark ground. The copper was also penetrated to some...
الصفحة 118 - ... that Science has not come to the end of her work — has, indeed, only as yet given mankind a foretaste of what she has in store for it — that her methods and her accomplished results are sound and trustworthy, serving with perfect adaptability for the increase of true discovery and the expansion and development of those general conceptions of the processes of nature at which she aims. New Chemical Elements. — There can be no doubt that the past quarter of a century will stand out for ever...
الصفحة 263 - DISEASES OF THE STOMACH. A Text-Book for Practitioners and Students. By Max Einhorn, MD, Professor of Clinical Medicine at the New York Post-Graduate Medical School and Hospital; Visiting Physician to the German Hospital.
الصفحة 120 - If the sun consists of a fraction of one per cent, of radium this will account for and make good the heat that is annually lost by it. This is a tremendous fact, upsetting all the calculations of physicists as to the duration in past and future of the sun's heat and the temperature of the earth's surface. The geologists and the biologists have long contended that some thousand million years must have passed during which the earth's surface has presented approximately the same conditions of temperature...
الصفحة 151 - Rayleigh, and JJ Thomson. Becquerel showed early in his study of the rays emitted by radium that some of them could be bent out of their straight path by making them pass between the poles of a powerful electro-magnet. In this way have finally been distinguished three classes of rays given off by radium : (1) the...
الصفحة 150 - TOO, and it can be condensed to a liquid by exposing it to the great cold of liquid air. It gives a peculiar spectrum of its own, and is probably a hitherto unknown inert gas — a new element similar to argon. But this by no means completes its history, even so far as experiments have as yet gone. The radium emanation decays, changes its character altogether, and loses half its radio-activity every four days. Precisely at the same rate as it decays the specimen of radium salt from which it was removed...