The Works of Dr. Benjamin FranklinW. Suttaby, 1809 - 454 頁 |
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第 1 到 5 筆結果,共 25 筆
第 93 頁
... clouds . Even in this uncertain state , his passion to be useful to mankind , displayed itself in a power- ful manner . Admitting the identity of electricity and lightning , and knowing the power of points in repelling bodies charged ...
... clouds . Even in this uncertain state , his passion to be useful to mankind , displayed itself in a power- ful manner . Admitting the identity of electricity and lightning , and knowing the power of points in repelling bodies charged ...
第 94 頁
... cloud pass- ed over it -- no sign of electricity appeared . He al- most despaired of success , when , suddenly , he ob- served the loose fibres of his string to move towards an erect position . He now presented his knuckle to the key ...
... cloud pass- ed over it -- no sign of electricity appeared . He al- most despaired of success , when , suddenly , he ob- served the loose fibres of his string to move towards an erect position . He now presented his knuckle to the key ...
第 95 頁
... cloud passed over it , in the absence of M. D'Alibard , and a number of sparks were drawn from it by Coiffier , joiner , with whom D'Alibard had left directions how to proceed , and by M. Raulet , the prior of Mary - la - ville . An ac ...
... cloud passed over it , in the absence of M. D'Alibard , and a number of sparks were drawn from it by Coiffier , joiner , with whom D'Alibard had left directions how to proceed , and by M. Raulet , the prior of Mary - la - ville . An ac ...
第 97 頁
... labours have added much to the stock of our knowledge . In September , 1752 , Franklin entered upon a course of experiments , to determine the state of elec F tricity in the clouds . From a number of experi- LIFE OF DR . FRANKLIN . 97.
... labours have added much to the stock of our knowledge . In September , 1752 , Franklin entered upon a course of experiments , to determine the state of elec F tricity in the clouds . From a number of experi- LIFE OF DR . FRANKLIN . 97.
第 98 頁
... clouds , and not the clouds that strike into the earth . " The letter containing these observations is dated in Sep- tember , 1753 ; and yet the discovery of ascending thunder has been said to be of a modern date , and has been ...
... clouds , and not the clouds that strike into the earth . " The letter containing these observations is dated in Sep- tember , 1753 ; and yet the discovery of ascending thunder has been said to be of a modern date , and has been ...
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