FREE BOOKS

Author's List




PREV.   NEXT  
|<   6   7   8   9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30  
31   32   33   34   35   36   37   38   39   40   41   42   43   44   45   46   47   48   49   50   51   52   53   54   55   >>   >|  
anti-friction metal to the mechanic for bearings. It was already known how to vulcanize rubber, and how to galvanize iron. The application of machinery in the harvest-field had begun with the embryonic reaper, while both the bicycle and the automobile were heralded in primitive prototypes. The gigantic expansion of the iron and steel industry was foreshadowed in the change from wood to coal in the smelting furnaces. The sewing-machine had brought with it, like the friction match, one of the most profound influences in modifying domestic life, and making it different from that of all preceding time. Even in 1847 few of these things had lost their novelty, most of them were in the earlier stages of development. But it is when we turn to electricity that the rich virgin condition of an illimitable new kingdom of discovery is seen. Perhaps the word "utilization" or "application" is better than discovery, for then, as now, an endless wealth of phenomena noted by experimenters from Gilbert to Franklin and Faraday awaited the invention that could alone render them useful to mankind. The eighteenth century, keenly curious and ceaselessly active in this fascinating field of investigation, had not, after all, left much of a legacy in either principles or appliances. The lodestone and the compass; the frictional machine; the Leyden jar; the nature of conductors and insulators; the identity of electricity and the thunder-storm flash; the use of lightning-rods; the physiological effects of an electrical shock--these constituted the bulk of the bequest to which philosophers were the only heirs. Pregnant with possibilities were many of the observations that had been recorded. But these few appliances made up the meagre kit of tools with which the nineteenth century entered upon its task of acquiring the arts and conveniences now such an intimate part of "human nature's daily food" that the average American to-day pays more for his electrical service than he does for bread. With the first year of the new century came Volta's invention of the chemical battery as a means of producing electricity. A well-known Italian picture represents Volta exhibiting his apparatus before the young conqueror Napoleon, then ravishing from the Peninsula its treasure of ancient art and founding an ephemeral empire. At such a moment this gift of despoiled Italy to the world was a noble revenge, setting in motion incalculable beneficent forces and agenci
PREV.   NEXT  
|<   6   7   8   9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30  
31   32   33   34   35   36   37   38   39   40   41   42   43   44   45   46   47   48   49   50   51   52   53   54   55   >>   >|  



Top keywords:

century

 

electricity

 
machine
 

invention

 

electrical

 

nature

 

appliances

 
discovery
 

friction

 

application


recorded

 

observations

 

Pregnant

 
possibilities
 
nineteenth
 

entered

 

revenge

 
meagre
 

forces

 

lightning


thunder
 

agenci

 
conductors
 

insulators

 

identity

 

physiological

 

motion

 

bequest

 

setting

 
philosophers

constituted

 

effects

 

beneficent

 
incalculable
 

despoiled

 
ravishing
 
chemical
 

Napoleon

 

treasure

 
Peninsula

battery

 
picture
 
represents
 

exhibiting

 

Italian

 

producing

 

conqueror

 
service
 
empire
 

moment