Report of the Annual MeetingJ. Murray., 1924 |
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agricultural algæ animals applied Archæology Association atom Bexhill-on-Sea Birds Brit British calculated Calymene cells character Committee course distribution effect Egypt elastic elastic limit electric electrons elements evolution experiments factors fatigue fauna Field fungus geography given graptolites hafnium helium hydrogen hysteresis important increase investigation J. J. Thomson Journ July June Lancashire larvæ Lepidoptera lines Little Owl Liverpool magnetic measured mental method molecules Museum nature nucleus O. G. S. Crawford observed obtained orbits organism physical plants position present problem Proc produced Prof Professor quantum number range of stress recent region relation Report scientific Section Sept September 14 species specimens spectra stage strain structure surface symbionts symbiosis tests theory tion tons per sq
Popular passages
Page 193 - This country is a palimpsest, in which the Bible is written over Herodotus, and the Koran over that.
Page 62 - If the stray field of a molecule, that is, of a complex of these atomic systems, be unsymmetrical, the surface layer of fluids and solids, which are close-packed states of matter, must differ from the interior mass in the orientation of the axes of the fields with respect to the normal to the surface, and so form a skin on the surface of a pure substance having all the molecules oriented in the same way instead of purely in random ways.
Page 163 - Engineer, being the art of directing the great sources of power in Nature for the use and convenience of man...
Page 158 - The most interesting question in the world," he writes, " (of those at least of which time will bring us an answer) is whether, after a short interval of recovery, material progress will be resumed, or whether, on the other hand, the magnificent episode of the nineteenth century is over. In attempting to answer this question it is important not to exaggerate the direct effects of the late War. If the permanent underlying influences are favourable, the effects of the War will be no more lasting than...
Page xxvii - To summon meetings in London or elsewhere for the consideration of matters affecting the Interests of Zoology or Zoologists, and to obtain by correspondence the opinion of Zoologists on matters of a similar kind, with power to raise by subscription from each Zoologist a sum of money for defraying current expenses of the Organisation.
Page 174 - It is their care in all the ages to take the buffet and cushion the shock. It is their care that the gear engages; it is their care that the switches lock. It is their care that the wheels run truly; it is their care to embark and entrain, Tally, transport, and deliver duly the Sons of Mary by land and main. They say to mountains, 'Be ye removed.
Page 372 - All parts of the structure shall be so proportioned that the sum of the maximum loads, together with the impact, shall not cause the tensile strain to exceed — On soft steel, 15,000 pounds per square inch. On medium steel, 17,000 pounds per square inch. 22. The same limiting unit strains shall also be used for members strained by wind pressure, centrifugal force, or momentum of train.
Page 23 - Experiment, directed by the disciplined imagination either of an individual, or still better, of a group of individuals of varied mental outlook, is able to achieve results which far transcend the imagination alone of the greatest natural philosopher. Experiment without imagination, or imagination without recourse to experiment, can accomplish little, but, for effective progress, a happy blend of these two powers is necessary.
Page 13 - At the center of the atom is a minute nucleus surrounded by a swirling group of 92 electrons, all in motion in definite orbits, and occupying but by no means filling a volume very large compared with that of the nucleus. Some of the electrons describe nearly circular orbits round the nucleus; others, orbits of a more elliptical shape whose axes rotate rapidly round the nucleus. The motion of the electrons in the different groups is not necessarily confined to a definite region of the atom, but the...
Page 62 - ... of the surface, and so form a skin on the surface of a pure substance having all the molecules oriented in the same way instead of purely in random ways. The result would be the polarisation of the surface, and the surface of two different fluids would attract or repel one another according to the sign of their surfaces.