English Mechanic and World of Science: With which are Incorporated "the Mechanic", "Scientific Opinion," and the "British and Foreign Mechanic.", Volume 55E. J. Kibblewhite, 1892 - Industrial arts |
Other editions - View all
Common terms and phrases
acid alternating current amateur ampères apparatus appear armature arrangement Astronomical battery boiler BOTTONE brass carbon cells centre chuck circuit clock coil colour condenser connected cylinder Devonian diameter direct current disc distance drill dynamo earth edge electric electroscope Enceladus engine ENGLISH MECHANIC Exchange experiment fitted give glass heat hole insulated iron lamp lantern lathe Leclanché cells length letter light lime machine magnetic mandrel means metal method mirror observed obtained Old Red Sandstone ordinary paper paraffin Permian piece pinion plane plate position pressure Prof psoriasis querist query R. C. ROYLE readers result screw shaft shellac side slide slide-rest solution star steam sulphuric acid sunspots surface swage teeth telescope temperature thick tion tool Triassic tube turned vertical volts wheel Wimshurst machine wire zinc
Popular passages
Page 217 - Anemometer appears to me to possess numerous advantages. The head is simple in construction and so strong that it is practically indestructible by the most violent hurricane. The recording apparatus can be placed at any reasonable distance from the head, and the connecting pipes may go round several sharp corners without harm. The power is conveyed from the head without loss by friction, and hence the instrument may be made sensitive to very low velocities without impairing its ability to resist...
Page 101 - ... instanced effects of extreme cold or heat on the human organism. The direct rays of the sun are of the greatest importance, and in health resorts should be utilized to the full; in fact, only climates where, during the winter months, even a delicate person can lie or sit for several hours a day basking in the sunshine are to be recommended for most complaints, and the various forms of sunshine recorders are used to aid the medical adviser in choice of such health stations.
Page 101 - Dr. C. Theodore Williams, the president, delivered an address on the "Value of Meteorological Instruments in the Selection of Health Resorts." He drew attention to thermometers, maximum and minimum, as the foundation-stone on which medical climatology rests, and instanced effects of extreme cold or heat on the human organism. The direct rays of the sun are of the greatest importance, and in health resorts should be utilized to the full; in fact, only climates where, during the winter months, even...
Page 101 - Hydres and Mentone enjoy over Marseilles is chiefly due to their being more sheltered from the Mistral, or north-west wind, the scourge of the lower valley of the Rhone from Valence to Avignon. He went on to describe the climate of the Riviera, illustrating it by lantern slides from recent photographs, including views of Hyeres, Costabella, Cannes, Nice, Mentone, San Remo, \ c.
Page 10 - Among other changes, the number of plants, etc., selected for observation has bet-n greatly reduced, while the number of observers has considerably increased. The winter of 1890-91 proved in England very destructive to the root crops, as well as to green vegetables and tender shrubs. Birds also suffered severely. In Scotland and Ireland, however, there was scarcely any severe weather until March. The flowering of wild plants was greatly retarded by cold in the spring, but during the summer the departures...
Page 101 - ... this region to be: (1) the Southern latitude; (2) the protection from cold winds by mountain ranges ; and (3) the equalizing and warming influence of the Mediterranean Sea, which being practically tideless is always equally potent, not varying with hour and season. Dr. Williams mentioned the weak points of the South of France climate with its blustering mistral, its occasional cold bise, its moist...
Page 10 - Like other maladies of high infective capacity, influenza has spread most easily, other things being equal, in cold, calm weather, when ventilation in houses and railway cars is at a minimum, and when, perhaps, the breathing organs are most open to attack. But large and rapid communications seem to be of much more importance than mere climatic conditions. Across frozen and snow-covered countries and tropical regions it is conveyed at a speed corresponding, not with the movements of the atmosphere,...
Page 101 - After the delivery of this address the Meeting was adjourned in order to allow the Fellows and their friends an opportunity to inspect the Exhibition of Instruments relating to Climatology, which had been arranged in the rooms of the Institution of Civil Engineers, 25 Great George Street.
Page 136 - Attention Is especially drawn to hint No. 4. The space devoted to letters, queries, and replies is meant for the general good, and it is not fair to occupy it with questions such as are indicated above, which are only of individual interest, and which, if not advertisement» in themselves, lead to replies which are.
Page 10 - Russell sajs that there is no definite or known atmospheric quality or movement on which the hypothesis of atmospheric conveyance can rest, and when closely approached it is found to be no more available than a phantom. Neither lower nor upper currents have ever taken a year to cross Europe from east to west, or adjusted their progress to the varying rate of human intercourse. Like other maladies of high infective capacity, influenza has spread most easily, other things being equal, in cold, calm...