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
... equal pressure on the earth , must be six times as dense . In my first letter I fixed the density of a lunar atmosphere capable of restraining evaporation at the freezing temperature , at th of the density of the earth's atmosphere . I ...
... equal pressure on the earth , must be six times as dense . In my first letter I fixed the density of a lunar atmosphere capable of restraining evaporation at the freezing temperature , at th of the density of the earth's atmosphere . I ...
Seite 16
... equal to about 6 ampère hours , and as you will want 4 ampères for 12 hours , equal 48 ampère hours , 1202 Figi Fvg I Sim Fig III Figt . Elevation Plas Scale 1/2 = 1 Foot on to the strips left after cutting on the sides of the openings ...
... equal to about 6 ampère hours , and as you will want 4 ampères for 12 hours , equal 48 ampère hours , 1202 Figi Fvg I Sim Fig III Figt . Elevation Plas Scale 1/2 = 1 Foot on to the strips left after cutting on the sides of the openings ...
Seite 32
... equal to the weight of the atmosphere vertically above the A. Cowper Ranyard . stratum . THE TEMPERATURE OF THE MOON AND OF SPACE . [ 32125 . ] - MR . PEAL ( letter 32103 ) is under the impression that I have omitted to take into ...
... equal to the weight of the atmosphere vertically above the A. Cowper Ranyard . stratum . THE TEMPERATURE OF THE MOON AND OF SPACE . [ 32125 . ] - MR . PEAL ( letter 32103 ) is under the impression that I have omitted to take into ...
Seite 40
... equal one volt E.M.F. ? 2. How many volts must a battery be capable of giving to drive a 2H.P. electro - motor ? Is it possible to judge , or must the resistance of wire , make of machine , & c . , be taken into account ? -GRISCOM ...
... equal one volt E.M.F. ? 2. How many volts must a battery be capable of giving to drive a 2H.P. electro - motor ? Is it possible to judge , or must the resistance of wire , make of machine , & c . , be taken into account ? -GRISCOM ...
Seite 47
... equals the angle the position of the distant object on a reduced scale . C F ' J ' , it follows that the intersection of the ... equal to that made by the ing and distance of the object C from any given lines of sight drawn from the two ...
... equals the angle the position of the distant object on a reduced scale . C F ' J ' , it follows that the intersection of the ... equal to that made by the ing and distance of the object C from any given lines of sight drawn from the two ...
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Häufige Begriffe und Wortgruppen
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
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...