English Mechanic and World of Science: With which are Incorporated "the Mechanic", "Scientific Opinion," and the "British and Foreign Mechanic.", Volume 53E. J. Kibblewhite, 1891 - Industrial arts |
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Page 6
... appear for believing that the energy is not transmitted by the wire at all , but by the sur- rounding ether . In some experiments by Prof. J. J. Thompson , the velocity of electric disturbances along the wire surrounded by air was ...
... appear for believing that the energy is not transmitted by the wire at all , but by the sur- rounding ether . In some experiments by Prof. J. J. Thompson , the velocity of electric disturbances along the wire surrounded by air was ...
Page 20
... appear so coarse that the fine detail is lost . Will anyone kindly inform me what collodion will answer to give a microscopically fine image , and formula for developer for same , and name of any book on the subject ? -MICRO . [ 73852 ...
... appear so coarse that the fine detail is lost . Will anyone kindly inform me what collodion will answer to give a microscopically fine image , and formula for developer for same , and name of any book on the subject ? -MICRO . [ 73852 ...
Page 29
... appear outside the engine . The author remarked that this system transferred the limiting speed of engines from ... appear that if the photographic plate were only exposed long enough , the whole face of the sky would appear nebulous ...
... appear outside the engine . The author remarked that this system transferred the limiting speed of engines from ... appear that if the photographic plate were only exposed long enough , the whole face of the sky would appear nebulous ...
Page 31
... appears . " I would have everyone write what he knows , and as much as he knows , but no more ; and that not in this ... appear from the " Astronomer- Royal " and from an impostor appending " F.R.A.S. " to his name , who neither is , nor ...
... appears . " I would have everyone write what he knows , and as much as he knows , but no more ; and that not in this ... appear from the " Astronomer- Royal " and from an impostor appending " F.R.A.S. " to his name , who neither is , nor ...
Page 45
... appears to be necessary in pre- paring the sensitive plate in order to obtain this essential condition of continuity ... appear . The proof obtained is negative when viewed by transmitted light ; in other words , each colour present in ...
... appears to be necessary in pre- paring the sensitive plate in order to obtain this essential condition of continuity ... appear . The proof obtained is negative when viewed by transmitted light ; in other words , each colour present in ...
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Common terms and phrases
acid amateur ampères angle armature battery bell boiler bore BOTTONE brass carbon cells centre chuck circuit coil colour connected copper cutter cylinder diameter disc drill dynamo edge electric Enceladus engine ENGLISH MECHANIC Exchange field-magnets galvanometer give glass GLATTON Greenwich Mean groove harmonium heat hole inch instrument iron kindly lamp lathe Leclanché cells length letter light machine magnet means MECHANIC AND WORLD metal microscope moon motion motor observations obtained ohms ordinary paper patent Perseids photographic piece pipe placed plane plate pole position post free pressure Prof pulley querist query readers resistance revolutions per minute ring Safety Bicycle screw shown side silver slide solder solution speed spindle square star steam steel surface telescope thick thread tion tool tube turned valve volts wheels Wimshurst Machine wire wood zinc
Popular passages
Page 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...
Page 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.
Page 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.
Page 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.
Page 47 - On the motion of the President, the thanks of the Society were given to Dr.
Page 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...
Page 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.
Page 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.
Page 103 - The transposition was made on an insulator for that purpose, first on one side of the line, and then on the other.
Page 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...