Man and Civilization ...Columbia University Press, 1926 - 117 páginas |
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Página 152
... engine as developed by Newcomen . In Newcomen's engine the steam was condensed within the piston cylinder by a jet of cold water after it had pushed the piston up to the other end . This device , which Newcomen had hit upon by the ...
... engine as developed by Newcomen . In Newcomen's engine the steam was condensed within the piston cylinder by a jet of cold water after it had pushed the piston up to the other end . This device , which Newcomen had hit upon by the ...
Página 153
John Storck. of on one side only , as in all former engines , while undoubtedly a stroke of genius , nevertheless in principle involved only a minor alteration of the existing mechanism . Striking examples of the dependence of new items ...
John Storck. of on one side only , as in all former engines , while undoubtedly a stroke of genius , nevertheless in principle involved only a minor alteration of the existing mechanism . Striking examples of the dependence of new items ...
Página 157
... engine , however , the case is different , for the de- vice is so arranged that a piston is driven back and forth , and this piston in turn moves other parts of the apparatus , each part traveling along fixed paths and repeating over ...
... engine , however , the case is different , for the de- vice is so arranged that a piston is driven back and forth , and this piston in turn moves other parts of the apparatus , each part traveling along fixed paths and repeating over ...
Página 159
... engine , it was very costly - iron ore was changed into cast iron in the blast furnace , the cast iron into wrought iron in a charcoal hearth , the wrought iron into blister steel by reheating in the presence of carbon , and finally the ...
... engine , it was very costly - iron ore was changed into cast iron in the blast furnace , the cast iron into wrought iron in a charcoal hearth , the wrought iron into blister steel by reheating in the presence of carbon , and finally the ...
Página 161
... engine because the machinists of his day were unable to bore a satisfactory cylinder which would keep the pis- ton snug against the cylinder wall throughout its motion . The first modern machine tool was Wilkinson's boring machine ...
... engine because the machinists of his day were unable to bore a satisfactory cylinder which would keep the pis- ton snug against the cylinder wall throughout its motion . The first modern machine tool was Wilkinson's boring machine ...
Términos y frases comunes
able action activities actually appearance attention become beginning body called certain child civilization complex connection considerable continually course culture depend desire determining direction discussion distinct doubt effect elements engine entirely example existing experience extremely fact feeling forces function give given habits hand human ideal ideas imagination important individual industry instances interest invention kind knowledge language leads less light lives machine manner materials matter means mental mind movements natural nearly necessary nervous never normal objects organism past perhaps period persons play possible present probably problems processes question reason REFERENCES reflex regarded relations respect responses result seems sexual situation social specific symbols things thinking thought tion traits turn understanding usually various whole
Pasajes populares
Página 53 - It is a partnership in all science; a partnership in all art; a partnership in every virtue, and in all perfection. As the ends of such a partnership cannot be obtained in many generations, it becomes a partnership not only between those who are living, but between those who are 135 living, those who are dead, and those who are to be born.
Página 42 - Society in every state is a blessing, but Government, even in its best state, is but a necessary evil; in its worst state an intolerable one...
Página 152 - I had gone to take a walk on a fine Sabbath afternoon. I had entered the Green by the gate at the foot of Charlotte Street, and had passed the old washing-house. I was thinking upon the engine at the time, and had gone as far as the herd's house, when the idea came into my mind that as steam was an elastic body it would rush into a vacuum, and if a communication were made between the cylinder and an exhausted vessel, it would rush into it, and might be there condensed without cooling the cylinder.
Página 108 - Active, persistent, and careful consideration of any belief or supposed form of knowledge in the light of the grounds that support it, and the further conclusions to which it tends, constitutes reflective thought.
Página 40 - In the progress of society, philosophy or speculation becomes, like every other employment, the principal or sole trade and occupation of a particular class of citizens. Like every other employment too, it is subdivided into a great number of different branches...
Página 43 - Some of us, indeed, are inclined to think that it is a kind of disease which the various races of man have to pass through— as children pass through measles or whooping cough; but if it is a disease, there is this serious consideration to be made, that while History tells us of many nations that have been attacked by it, of many that have succumbed to it, and of some that are still in the throes of it, we know of no single case in which a nation has fairly recovered from and passed through it to...
Página 48 - I teach you the superman. Man is something that is to be surpassed. What have ye done to surpass man? All beings hitherto have created something beyond themselves: and ye want to be the ebb of that great tide, and would rather go back to the beast than surpass man? What is the ape to man? A laughing-stock, a thing of shame. And just the same shall man be to the Superman: a...
Página 189 - To the broody hen the notion would probably seem monstrous that there should be a creature in the world to whom a nestful of eggs was not the utterly fascinating and precious and never-to-be-too-much-sat-upon object which it is to her. "Thus we may be sure that, however mysterious some animals' instincts may appear to us, our instincts will appear no less mysterious to them.
Página 104 - To make a prairie it takes a clover and one bee, One clover, and a bee, And revery. The revery alone will do, If bees are few.
Página 24 - Where the dark mist curtains the doorway The path to which is on the rainbow Where the zigzag lightning stands high on top, Where the he-rain stands high on top, Oh male divinity!