Technological Trends and National Policy: Including the Social Implications of New Inventions. June, 1937U.S. Government Printing Office, 1937 - 388 頁 |
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第 1 到 5 筆結果,共 68 筆
第 8 頁
... steam in connection with machinery made of hard metals has greatly changed family life , taking industrial production from the home and somewhat later a proportion of married women too , eventually aiding the extension of suffrage and ...
... steam in connection with machinery made of hard metals has greatly changed family life , taking industrial production from the home and somewhat later a proportion of married women too , eventually aiding the extension of suffrage and ...
第 10 頁
... steam railroad , the elec- tric railway , the automobile , the truck , the telephone , the chain store , the radio , and the motion picture . Another case is the influence of inventions on pri- vacy and isolation , that is , the ...
... steam railroad , the elec- tric railway , the automobile , the truck , the telephone , the chain store , the radio , and the motion picture . Another case is the influence of inventions on pri- vacy and isolation , that is , the ...
第 13 頁
... steam engine and the machines it drove were too large for a dwelling . Now there has come a new source of power readily available for home use , electricity . Will it restore to family life some- thing of its former glory before steam ...
... steam engine and the machines it drove were too large for a dwelling . Now there has come a new source of power readily available for home use , electricity . Will it restore to family life some- thing of its former glory before steam ...
第 25 頁
... steam ( at rising pressures ) from large electrical gen- erating plants . Other developments still in the ex- perimental stage indicate that much higher thermal efficiencies than at present will be general before many years . Still ...
... steam ( at rising pressures ) from large electrical gen- erating plants . Other developments still in the ex- perimental stage indicate that much higher thermal efficiencies than at present will be general before many years . Still ...
第 27 頁
... steam engines are also being fur- ther improved . The Diesel engine is heavier than the gasoline one , and therefore less suitable for short flights ; but its obtaining 30 % instead of 20 % of the energy of the fuel may some day favor ...
... steam engines are also being fur- ther improved . The Diesel engine is heavier than the gasoline one , and therefore less suitable for short flights ; but its obtaining 30 % instead of 20 % of the energy of the fuel may some day favor ...
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agriculture airplane aluminum areas automobile average broadcast Bureau cellulose changes chemical cities coal commercial communication construction cost cotton direct current displaced duction economic effects efficiency electric employment engine equipment factors farm Federal Power Commission fertilizer field freight fuel future gasoline highway horsepower important improvements increased industry influence internal-combustion engine inventions iron kilowatt-hours kilowatts labor less light lines machine machinery man-years manufacturing materials mechanical ment metal metallurgy methods million mineral mining motor nomic operation output passenger Patent pools patents percent petroleum photoelectric cell plants possible prediction present printing problem production progress radio railroad recent reduced result scientific social soil speed stations steam steel supply technical techniques technological telephone television telharmonium tion traffic transmission transportation trend unem United utilization vacuum tube wired television workers York zinc
熱門章節
第 48 頁 - I thank God, there are no free schools nor printing, and I hope we shall not have these hundred years. For learning has brought disobedience and heresy, and sects into the world, and printing has divulged them, and libels against the best government. God keep us from both"!
第 46 頁 - As I had occasion to pass daily to and from the buildingyard, while my boat was in progress, I have often loitered unknown near the idle groups of strangers, gathering in little circles, and heard various inquiries as to the object of this new vehicle. The language was uniformly that of scorn, or sneer, or ridicule.
第 46 頁 - The language was uniformly that of scorn, or sneer, or ridicule. The loud laugh often rose at my expense ; the dry jest ; the wise calculation of losses and expenditures ; the dull but endless repetition of the Fulton Folly.
第 41 頁 - ... and strong. The means of stopping these heavy carriages without a great shock, and of preventing them from running upon each other (for there would be many on the road at once) would be very difficult.
第 46 頁 - Yesterday week my iron boat was launched. It answers all my expectations, and has convinced the unbelievers who were 999 in a thousand. It will be only a nine days...
第 186 頁 - L = the distance between the first and last axles of a vehicle or combination of vehicles, in feet. "A value of 700 is recommended for 'c' as the lowest which should be imposed, but this should not be construed as inhibiting greater values.
第 42 頁 - Twenty miles an hour, sir — why you will not be able to keep an apprentice boy at his work! Every Saturday evening he must have a trip to Ohio to spend a Sunday with his sweetheart. Grave plodding citizens will be flying about like comets.
第 47 頁 - The demonstration that no possible combination of known substances, known forms of machinery, and known forms of force can be united in a practicable machine by which men shall fly long distances through the air, seems to the writer as complete as it is possible for the demonstration of any physical fact to be.
第 3 頁 - Not all parts of our organization are changing at the same speed, or at the same time. Some are rapidly moving forward and others are lagging. These unequal rates of change in economic life, in government, in education, in science and religion make zones of danger and points of tension...
第 298 頁 - I would as lief see a patent churn and a man turning it. They are, commonly, places merely where somebody is making money, it may be counterfeiting. The virtue of making two blades of grass grow where only one grew before does not begin to be superhuman.