The Works of Benjamin Franklin: Containing Several Political and Historical Tracts Not Included in Any Former Edition, and Many Letters, Official and Private, Not Hitherto Published; with Notes and a Life of the Author by Jared Sparks, Band 5Childs & Peterson, 1840 |
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... continue to point north when placed on water , whether the fire entered at that end , or at the contrary end . The polarity given is strongest when the needle is struck lying north and south ; weakest , when lying east and west ...
... continue to point north when placed on water , whether the fire entered at that end , or at the contrary end . The polarity given is strongest when the needle is struck lying north and south ; weakest , when lying east and west ...
Seite 225
... continue to point north . In these experiments the ends of the needle are sometimes finely blued , like a watch - spring , by the electric flame . This color , given by the flash from two jars only , will wipe off ; but four jars fix it ...
... continue to point north . In these experiments the ends of the needle are sometimes finely blued , like a watch - spring , by the electric flame . This color , given by the flash from two jars only , will wipe off ; but four jars fix it ...
Seite 341
... continue , and perhaps be quicker . Or , suspend a very small cork ball by a fine silk thread , so that it may hang close to the edge of the rod - bell ; then , whenever the bell is electrified , whether positively or negatively , the ...
... continue , and perhaps be quicker . Or , suspend a very small cork ball by a fine silk thread , so that it may hang close to the edge of the rod - bell ; then , whenever the bell is electrified , whether positively or negatively , the ...
Inhalt
An Account of Negotiations in London for effecting | 1 |
Vindication and Offer from Congress to Parliament | 83 |
Articles of Confederation and Perpetual Union proposed | 91 |
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Abbé Abbé Nollet America appear attracted BENJAMIN FRANKLIN body bottle Britain charged clouds coating Collinson colonies common matter conduct Congress contained cork ball cushion discharged draw earth effect elec electric fluid electric matter electrical atmosphere electrical experiments electrical fire electrified equal fait finger floor force Franklin give glass globe greater hand heat honor hook igne ignis iron j'ai JAMES BOWDOIN jars Kinnersley letter Leyden lightning Lord Lord Chatham Lord Hyde Lordship magnetic melted ment metal motion natural quantity needle negative non-electric observed opinion paper Parliament passing person PETER COLLINSON Philadelphia piece plate pointed rod positively power of points present prime conductor quantity of electricity received repelled repulsion round Royal Society rubbed shock side silk spark standing on wax stroke sulphur suppose surface suspended thread tion touch the wire tricity tube vapors whole wire