Addresses Delivered at the Triennial Celebration ..., Томови 24-281886 |
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Страница 24
... shown that , while conversation over a two - mile gutta - percha cable was continually disturbed by existing cross - talk , conversation was carried on over a similarly - constructed Faraday cable , five miles in length , without cross ...
... shown that , while conversation over a two - mile gutta - percha cable was continually disturbed by existing cross - talk , conversation was carried on over a similarly - constructed Faraday cable , five miles in length , without cross ...
Страница 25
... shown that , after several years of use , this insulation falls so low that cross - talk easily appears , due to direct leakage . Patterson cables , of course , under different names , were used years ago in France and Germany , and ...
... shown that , after several years of use , this insulation falls so low that cross - talk easily appears , due to direct leakage . Patterson cables , of course , under different names , were used years ago in France and Germany , and ...
Страница 26
... shown that they have not changed materially in insulating power . We have seen that , if we were to attempt to construct an under- ground telephone system , say five miles in length , using gutta - percha- covered wires in cables , we ...
... shown that they have not changed materially in insulating power . We have seen that , if we were to attempt to construct an under- ground telephone system , say five miles in length , using gutta - percha- covered wires in cables , we ...
Страница 42
... shown to save about forty per cent as against any other electrical system . Again , instead of the current being all supplied by the main generating station at one or two points , it is supplied from nearly as many moving stations as ...
... shown to save about forty per cent as against any other electrical system . Again , instead of the current being all supplied by the main generating station at one or two points , it is supplied from nearly as many moving stations as ...
Страница 44
... shown on the screen . Lieut . ZALINSKI said : The first pneumatic gun presented for experiment by Mr. Mefford , the first designer , consisted substantially of a brass tube two inches in diameter , one - quarter inch thick , and FIG . 2 ...
... shown on the screen . Lieut . ZALINSKI said : The first pneumatic gun presented for experiment by Mr. Mefford , the first designer , consisted substantially of a brass tube two inches in diameter , one - quarter inch thick , and FIG . 2 ...
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28 State Street alternating current ammonia amount amperes apparatus arbitration arch ARTS was held Avesta battery Beacon Street belt Bessemer process boiler Boston bridge cantilever bridge carbon cement cent circuit circulator coal coil Commonwealth Avenue condensation conductors connected construction copper cost cylinder diameter dynamo effect elastic limit electrical electro-motive force employers engine experiments feet furnace George W heat horse-power incandescent increase induction induction coil Institute of Technology Institute on Thursday iron labor lamps length less light machine magnetic Mass material matter measure metal method Mount Vernon obtained ohms operation ordinary orifice oxide pipe plate pounds practical present pressure previous meeting produce Prof rails read a paper resistance River SOCIETY OF ARTS span square inch steam steel supply surface temperature tensile tensile strength tion train tube valve volts weight welding wire
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Страница 122 - Thus the nutrients of vegetable foods are, in general, much less costly than in animal foods. The animal foods have, however, the advantage of containing a larger proportion of protein and fats, and the protein, at least, in more digestible forms.
Страница 133 - ... following : — First. To give the students practice in such experimental work as any engineer is constantly liable to be called upon to perform in the practice of his profession; as boiler tests, engine tests, power determinations, etc. Second. To give the students some experience in carrying on original investigations in engineering subjects with such care and accuracy as to render the results of real value to the engineering community. Third. By publishing from time to time the results of...
Страница 96 - President, in the Chair. After the reading of the minutes of the previous meeting the name of Dr.