Boston Journal of Philosophy and the Arts: Intended to Exhibit a View of the Progress of Discovery in Natural Philosophy, Mechanics, Chemistry, Geology and Mineralogy, Natural History, Comparative Anatomy and Physiology, Geography, Statistics, and the Fine and Useful Arts, 2권Cummings, Hilliard, & Company, 1825 |
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100 페이지
... Magnetic Premium . - The Board of Longitude have conferred the parliamentary premium of five hundred pounds on Mr Barlow , of the Royal Military Academy , for his method of correcting the local magnetic attraction of ships . The great ...
... Magnetic Premium . - The Board of Longitude have conferred the parliamentary premium of five hundred pounds on Mr Barlow , of the Royal Military Academy , for his method of correcting the local magnetic attraction of ships . The great ...
119 페이지
... Magnetic Intensity of a Chronometer . By GEORGE HARVEY , Esq . M. G. S. M. A. S. & c . — P . 117-126 . This ingenious and able paper will be regarded by philoso- phers as adding very important information to that which has already been ...
... Magnetic Intensity of a Chronometer . By GEORGE HARVEY , Esq . M. G. S. M. A. S. & c . — P . 117-126 . This ingenious and able paper will be regarded by philoso- phers as adding very important information to that which has already been ...
120 페이지
... magnetic power was exhibited by the chain , the axles of the wheels and pinions , the arbor of the fusee , and the balance of its springs . Mr Cox , the agent for Arnold's chro- nometer at Plymouth , remarked , when he saw this chronome ...
... magnetic power was exhibited by the chain , the axles of the wheels and pinions , the arbor of the fusee , and the balance of its springs . Mr Cox , the agent for Arnold's chro- nometer at Plymouth , remarked , when he saw this chronome ...
210 페이지
... magnetic meridian of any place , the action of the iron is either coincident with , or directly opposed to , the magnetic action of the earth , and in either case the lateral direction of the needle is not disturbed : but when the ...
... magnetic meridian of any place , the action of the iron is either coincident with , or directly opposed to , the magnetic action of the earth , and in either case the lateral direction of the needle is not disturbed : but when the ...
211 페이지
... magnetic equator , and increasing in quanti- ty as the dip in either hemisphere increased : and by him the subject was brought under the notice of the Admiralty Board , who ordered experiments to be made in different ships , in order to ...
... magnetic equator , and increasing in quanti- ty as the dip in either hemisphere increased : and by him the subject was brought under the notice of the Admiralty Board , who ordered experiments to be made in different ships , in order to ...
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