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 49 筆
第 13 頁
... practical task of governmental planning . Indeed , the experience gained from this first attempt at describing the technological trends of the near future is such as to give confidence that further efforts will be more fruitful and that ...
... practical task of governmental planning . Indeed , the experience gained from this first attempt at describing the technological trends of the near future is such as to give confidence that further efforts will be more fruitful and that ...
第 19 頁
... practical use , 24 years ; to commercial success 14 years ; to important use 12 years , or say 50 years from the first serious work on the invention . Again , in the study of the most important inventions of the last generation before ...
... practical use , 24 years ; to commercial success 14 years ; to important use 12 years , or say 50 years from the first serious work on the invention . Again , in the study of the most important inventions of the last generation before ...
第 21 頁
... practical purposes that is impos- sible , because we have not the money , language , nor any need to make such calls . At any rate , hardly one in a million has , so the invention of transoceanic teleph- ony to such countries does not ...
... practical purposes that is impos- sible , because we have not the money , language , nor any need to make such calls . At any rate , hardly one in a million has , so the invention of transoceanic teleph- ony to such countries does not ...
第 48 頁
... practical machine , supplanted 72 Carter , T. F. , The Invention of Printing and Its Spread Westward ( rev . ed . by D. C. McMurtrie , New York , 1931 ) , pp . 112-113 . 73 Duffus , R. L. , " Printing and Publishing " Encyclopaedia of ...
... practical machine , supplanted 72 Carter , T. F. , The Invention of Printing and Its Spread Westward ( rev . ed . by D. C. McMurtrie , New York , 1931 ) , pp . 112-113 . 73 Duffus , R. L. , " Printing and Publishing " Encyclopaedia of ...
第 50 頁
... practical application of these finds . Even when in 1907 De- Forest put the radio tube in workable form at the same time as others had made like inventions independently , he was unable to sell his patent and let it lapse rather than ...
... practical application of these finds . Even when in 1907 De- Forest put the radio tube in workable form at the same time as others had made like inventions independently , he was unable to sell his patent and let it lapse rather than ...
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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.