English Mechanic and World of Science: With which are Incorporated "the Mechanic", "Scientific Opinion," and the "British and Foreign Mechanic.", Band 53E. J. Kibblewhite, 1891 |
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Seite 10
... effect upon our sensitive salt of lights of different hues . Give this negative plate or strip a neutral tone , and let it replace the " discrimi nating " slit in the apparatus that has been described . But now between it and the ...
... effect upon our sensitive salt of lights of different hues . Give this negative plate or strip a neutral tone , and let it replace the " discrimi nating " slit in the apparatus that has been described . But now between it and the ...
Seite 11
... effect on the performance of a reflecting telescope if the flat were slightly curved ; partially to see how much error is admissible . I may add I have been led to this inquiry from finding the H A - Fig 1 C E extreme difficulty there ...
... effect on the performance of a reflecting telescope if the flat were slightly curved ; partially to see how much error is admissible . I may add I have been led to this inquiry from finding the H A - Fig 1 C E extreme difficulty there ...
Seite 12
... effect ceases , and for over 1,600 yards . these notes become as soft and weak as the rest As the injurious effect of the resonance of the ear is so far counteracted by the introduction of a resonator tuned to a lower pitch , so ...
... effect ceases , and for over 1,600 yards . these notes become as soft and weak as the rest As the injurious effect of the resonance of the ear is so far counteracted by the introduction of a resonator tuned to a lower pitch , so ...
Seite 14
... effect ceases , and these notes become as soft and weak as the rest . As the injurious effect of the resonance of the ear is so far counteracted by the introduction of a resonator tuned to a lower pitch , so conversely could the ...
... effect ceases , and these notes become as soft and weak as the rest . As the injurious effect of the resonance of the ear is so far counteracted by the introduction of a resonator tuned to a lower pitch , so conversely could the ...
Seite 17
... effect of induced current , as I lare say you know the current from secondary wire oil is momentary . You can easily test the effect of ach by using a vacuum tube . The construction of ores as above only relates to induction coils ...
... effect of induced current , as I lare say you know the current from secondary wire oil is momentary . You can easily test the effect of ach by using a vacuum tube . The construction of ores as above only relates to induction coils ...
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Beliebte Passagen
Seite 61 - In this way a wash is made which forms a silicate if often wetted, and becomes, after a time, almost like stone. The four constituents mixed together, give the ground color, to which any pigment that can be used with lime is added. It is applied quite thickly to the wall, or other surface, let dry one day, and the next day frequently covered with water, which makes it waterproof. This wash can be...
Seite 55 - The total energy of any material system is a quantity which can neither be increased nor diminished by any action between the parts of the system, though it may be transformed into any of the forms of which energy is susceptible.
Seite 155 - For any discovery, invention, or newly-devised method for obviating or materially diminishing any risk to life, limb, or health, incidental to any industrial occupation, and not previously capable of being so obviated or diminished by any known and practically available means.
Seite 94 - He proposes to raise a vessel by means of metal balls, strong enough, when exhausted, to resist the pressure of the external air, but at the same time so thin as, in the same circumstances, to be lighter than their bulk of air.
Seite 47 - On the motion of the President, the thanks of the Society were given to Dr.
Seite 143 - To save silver, the ware can be first covered with a layer of tin ; 1 part cream of tartar is dissolved in 8 of boiling water, and one or more tin anodes are joined with the carbon pole of a Bunsen element. The zinc pole communicates with a well-cleaned piece of copper, and the battery is made to act till enough tin is deposited on the copper, when this is taken out and the ironware is put into its place. The ware thus covered with tin chemically pure and silvered, is much cheaper than any other...
Seite 46 - Office 8 inch gauge is by some regarded as the best gauge for ordinary observers to whom cost is not a primary object, as it has all the good features of the Glaisher and of the Snowdon patterns, and, being of copper, is very durable. In mountainous districts, where the rainfall is heavy, and the gauges can be examined only periodically, gauges capable of holding 40 or 60 inches of rain must be used.
Seite 103 - Edison's patent claimed, first, ' in an instrument for transmitting electric impulses by sound, a diaphragm or tympan of mica, substantially as set forth ; ' secondly, 'in an instrument for transmitting electric impulses by sound, the combination with a diaphragm or tympan of electric tension, regulators substantially as hereinbefore described, for varying the resistance in a closed circuit, substantially as set forth ; ' and, thirdly, he claimed the 'phonograph.
Seite 103 - The transposition was made on an insulator for that purpose, first on one side of the line, and then on the other.
Seite 22 - No packing is used to prevent upward leakage. All water which passes the screw when the tap is open enters the annular space E, and is drawn off into the bib through the eduction tube F, in which a current is induced by the velocity of the water...