贝壳电子书 > 英文原著电子书 > the story of mankind >

第81章

the story of mankind-第81章

小说: the story of mankind 字数: 每页4000字

按键盘上方向键 ← 或 → 可快速上下翻页,按键盘上的 Enter 键可回到本书目录页,按键盘上方向键 ↑ 可回到本页顶部!
————未阅读完?加入书签已便下次继续阅读!




vessel; it was confiscated by the authorities on a complaint of

the boatmen's union; who feared that such a craft would deprive

them of their livelihood。 Papin finally died in London in

great poverty; having wasted all his money on his inventions。

But at the time of his death; another mechanical enthusiast;

Thomas Newcomen; was working on the problem of a new

steam…pump。 Fifty years later his engine was improved upon

by James Watt; a Glasgow instrument maker。 In the year

1777; he gave the world the first steam engine that proved of

real practical value。



But during the centuries of experiments with a ‘‘heat…engine;''

the political world had greatly changed。 The British

people had succeeded the Dutch as the common…carriers of the

world's trade。 They had opened up new colonies。 They took

the raw materials which the colonies produced to England;

and there they turned them into finished products; and then

they exported the finished goods to the four corners of the

world。 During the seventeenth century; the people of Georgia

and the Carolinas had begun to grow a new shrub which gave

a strange sort of woolly substance; the so…called ‘‘cotton wool。''

After this had been plucked; it was sent to England and there

the people of Lancastershire wove it into cloth。 This weaving

was done by hand and in the homes of the workmen。 Very soon

a number of improvements were made in the process of weaving。

In the year 1730; John Kay invented the ‘‘fly shuttle。''

In 1770; James Hargreaves got a patent on his ‘‘spinning

jenny。'' Eli Whitney; an American; invented the cotton…gin;

which separated the cotton from its seeds; a job which had

previously been done by hand at the rate of only a pound a day。

Finally Richard Arkwright and the Reverend Edmund Cartwright

invented large weaving machines; which were driven by

water power。 And then; in the eighties of the eighteenth

century; just when the Estates General of France had begun

those famous meetings which were to revolutionise the political

system of Europe; the engines of Watt were arranged in such

a way that they could drive the weaving machines of Arkwright;

and this created an economic and social revolution

which has changed human relationship in almost every part

of the world。



As soon as the stationary engine had proved a success; the

inventors turned their attention to the problem of propelling

boats and carts with the help of a mechanical contrivance。

Watt himself designed plans for a ‘‘steam locomotive;'' but

ere he had perfected his ideas; in the year 1804; a locomotive

made by Richard Trevithick carried a load of twenty tons at

Pen…y…darran in the Wales mining district。



At the same time an American jeweller and portrait…painter

by the name of Robert Fulton was in Paris; trying to convince

Napoleon that with the use of his submarine boat; the

‘‘Nautilus;'' and his ‘‘steam…boat;'' the French might be able to

destroy the naval supremacy of England。



Fulton's idea of a steamboat was not original。 He had

undoubtedly copied it from John Fitch; a mechanical genius of

Connecticut whose cleverly constructed steamer had first navigated

the Delaware river as early as the year 1787。 But Napoleon

and his scientific advisers did not believe in the practical

possibility of a self…propelled boat; and although the Scotch…

built engine of the little craft puffed merrily on the Seine; the

great Emperor neglected to avail himself of this formidable

weapon which might have given him his revenge for Trafalgar。



As for Fulton; he returned to the United States and; being

a practical man of business; he organised a successful steamboat

company together with Robert R。 Livingston; a signer of

the Declaration of Independence; who was American Minister

to France when Fulton was in Paris; trying to sell his invention。

The first steamer of this new company; the ‘‘Clermont;''

which was given a monopoly of all the waters of New York

State; equipped with an engine built by Boulton and Watt of

Birmingham in England; began a regular service between New

York and Albany in the year 1807。



As for poor John Fitch; the man who long before any one

else had used the ‘‘steam…boat'' for commercial purposes; he

came to a sad death。 Broken in health and empty of purse; he

had come to the end of his resources when his fifth boat; which

was propelled by means of a screw…propeller; had been destroyed。

His neighbours jeered at him as they were to laugh a

hundred years later when Professor Langley constructed his

funny flying machines。 Fitch had hoped to give his country

an easy access to the broad rivers of the west and his countrymen

preferred to travel in flat…boats or go on foot。 In the year

1798; in utter despair and misery; Fitch killed himself by taking

poison。



But twenty years later; the ‘‘Savannah;'' a steamer of 1850

tons and making six knots an hour; (the Mauretania goes just

four times as fast;) crossed the ocean from Savannah to Liverpool

in the record time of twenty…five days。 Then there was

an end to the derision of the multitude and in their enthusiasm

the people gave the credit for the invention to the wrong man。



Six years later; George Stephenson; a Scotchman; who had

been building locomotives for the purpose of hauling coal from

the mine…pit to smelting ovens and cotton factories; built his

famous ‘‘travelling engine'' which reduced the price of coal by

almost seventy per cent and which made it possible to establish

the first regular passenger service between Manchester and

Liverpool; when people were whisked from city to city at the

unheard…of speed of fifteen miles per hour。 A dozen years

later; this speed had been increased to twenty miles per hour。

At the present time; any well…behaved flivver (the direct descendant

of the puny little motor…driven machines of Daimler

and Levassor of the eighties of the last century) can do better

than these early ‘‘Puffing Billies。''



But while these practically…minded engineers were improving

upon their rattling ‘‘heat engines;'' a group of ‘‘pure''

scientists (men who devote fourteen hours of each day to the

study of those ‘‘theoretical'' scientific phenomena without which

no mechanical progress would be possible) were following a

new scent which promised to lead them into the most secret and

hidden domains of Nature。



Two thousand years ago; a number of Greek and Roman

philosophers (notably Thales of Miletus and Pliny who was

killed while trying to study the eruption of Vesuvius of the

year 79 when Pompeii and Herculaneum were buried beneath

the ashes) had noticed the strange antics of bits of straw and of

feather which were held near a piece of amber which was being

rubbed with a bit of wool。 The schoolmen of the Middle Ages

had not been interested in this mysterious ‘‘electric'' power。

But immediately after the Renaissance; William Gilbert; the

private physician of Queen Elizabeth; wrote his famous treatise

on the character and behaviour of Magnets。 During the

Thirty Years War Otto von Guericke; the burgomaster of

Magdeburg and the inventor of the air…pump; constructed the

first electrical machine。 During the next century a large number

of scientists devoted themselves to the study of electricity。

Not less than three professors invented the famous Leyden

Jar in the year 1795。 At the same time; Benjamin Franklin;

the most universal genius of America next to Benjamin Thomson

(who after his flight from New Hampshire on account of

his pro…British sympathies became known as Count Rumford)

was devoting his attention to this subject。 He discovered that

lightning and the electric spark were manifestations of the same

electric power and continued his electric studies until the end of

his busy and useful life。 Then came Volta with his famous

‘‘electric pile'' and Galvani and Day and the Danish professor

Hans Christian Oersted and Ampere and Arago and Faraday;

all of them

返回目录 上一页 下一页 回到顶部 0 0

你可能喜欢的