The Intellectual Rise in Electricity: A HistoryLongmans, Green & Company, 1895 - 611 páginas |
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Página 19
... direction . This is its directive tendency , or , as William Gilbert called it in 1600 , its " verticity , " and upon this quality , as is well known , depends the use of the magnet- ized needle in the mariner's compass . We may ...
... direction . This is its directive tendency , or , as William Gilbert called it in 1600 , its " verticity , " and upon this quality , as is well known , depends the use of the magnet- ized needle in the mariner's compass . We may ...
Página 20
... direction ; or to do this repeatedly and with different pieces and thus learn that the phenomenon is true of this particular stone and not of other stones , obvi- ously involves no necessary knowledge of its attractive effect on iron ...
... direction ; or to do this repeatedly and with different pieces and thus learn that the phenomenon is true of this particular stone and not of other stones , obvi- ously involves no necessary knowledge of its attractive effect on iron ...
Página 47
... directions than to the southward . It had moved to the west and to Rome . The Roman , Lucretius , ' in that great- est of all didactic poems , " On the Nature of Things , " tells of the Samothracian rings as still existing ( 95 to 52 ...
... directions than to the southward . It had moved to the west and to Rome . The Roman , Lucretius , ' in that great- est of all didactic poems , " On the Nature of Things , " tells of the Samothracian rings as still existing ( 95 to 52 ...
Página 51
... direction , so also is the wholesome good and regular motion of the world . " It must not be assumed , because of the interpretations which it is possible to make at the present time of the magnetic phenomena mentioned by Lucretius ...
... direction , so also is the wholesome good and regular motion of the world . " It must not be assumed , because of the interpretations which it is possible to make at the present time of the magnetic phenomena mentioned by Lucretius ...
Página 53
... direction was first discovered is a question , the answer to which is prob- ably forever lost . The civilized world remained in igno- rance of the fact for nearly eighteen centuries after the attractive effect of the lodestone had ...
... direction was first discovered is a question , the answer to which is prob- ably forever lost . The civilized world remained in igno- rance of the fact for nearly eighteen centuries after the attractive effect of the lodestone had ...
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Términos y frases comunes
amber ancient appears Arabs Aristotle asserts attractive power Bacon became believed bodies Boyle Cabæus Cardan cause century Chinese compass needle Descartes direction discovery doctrine draw earth effect Egyptian electric electrified Etruscans existence experiments fact field of force followed Fracastorio Galileo Gilbert glass globe Greek Guericke hand heat heavens hence Hist hypothesis induction invention iron Klaproth knowledge known learned light lodestone London Lucretius magnetic attraction magnetite matter ment merely metal modern motion moved nature navigation Neckam netic north pole observed Olaus Magnus original Paracelsus Peregrinus phenomena philosophers physical polarity Pole star Porta probably Ptolemy reason regarded repelled ring Robert Boyle Robert Hooke Royal rubbed Samothrace Sarpi says ships sphere stone substance terrella Thales Theophrastus theory things tion treatise tube turn variation vessel virtue voyages William Gilbert writing
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