The Annals of Electricity Magnetism and Chemistry and Guardian of Experimental Science, Band 8Sherwood, Gilbert and Piper |
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Seite 27
... object of this communication is to give some information in regard to the nature and progress of the series of magnetic observa- tions which has been instituted at the Observatory of Harvard University , in co - operation with the plan ...
... object of this communication is to give some information in regard to the nature and progress of the series of magnetic observa- tions which has been instituted at the Observatory of Harvard University , in co - operation with the plan ...
Seite 42
... object is to ascertain the steady and periodical variations of the meridian , we should exclude from the comparison those days whose serenity is affected by what Humboldt has denominated magnetic storms , just as we should pass over ...
... object is to ascertain the steady and periodical variations of the meridian , we should exclude from the comparison those days whose serenity is affected by what Humboldt has denominated magnetic storms , just as we should pass over ...
Seite 44
... object of extreme interest to inquire how far these are local and accidental , and to what extent they must be regarded as general , and proceeding from some grand central force . Such an examination was contemplated , as among the good ...
... object of extreme interest to inquire how far these are local and accidental , and to what extent they must be regarded as general , and proceeding from some grand central force . Such an examination was contemplated , as among the good ...
Seite 45
... object ; having been destitute of the means of contributing its portion to the general levy which has been made upon them . But the term - day observations at Toronto , U.C. , Philadelphia , and Cambridge , will furnish materials for ...
... object ; having been destitute of the means of contributing its portion to the general levy which has been made upon them . But the term - day observations at Toronto , U.C. , Philadelphia , and Cambridge , will furnish materials for ...
Seite 49
... object of throwing additional light on this interesting inquiry . As early as May , 1840 , the observations took a wider range , so as to furnish a diurnal curve , not only for the term - day , but also for several other days in the ...
... object of throwing additional light on this interesting inquiry . As early as May , 1840 , the observations took a wider range , so as to furnish a diurnal curve , not only for the term - day , but also for several other days in the ...
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ammonia animal apparatus appears applied atmosphere atoms attraction ball battery become Becquerel bodies boiler brass camphor carbonic acid cause chemical circuit circumstances cloud colour condenser conductor copper curve cylinder declination decomposing decomposition deposited dilute direction disc discharge divergence effect electric action electric current electric fluid electrified electro-magnet electrometer electroscope employed evaporation experiments extremities fact force galvanic galvanometer gilding glass gold leaf heat hydrogen immersion inches increase induced instrument insulated intensity iron latter liquid luminous arc magnetic magnetometer manner means mercury metal minutes motion needle negative nitric acid observations obtained oxamic oxamic acid oxamide oxide oxygen pairs paper particles phenomena Philosophical piece pile plate platinum poles portion positive present produced proportion repulsion resistance salt shew side solution steam substance sufficient sulphuric acid surface takes place temperature thickness tion tricity tube vapour vessel voltaic WILLIAM STURGEON wire zinc