Nature, Volume 55Nature Publishing Group, 1896 |
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Página 9
... important paper , on the transmission of kathode rays through thin metallic films , is particularly interesting as the starting - point for Lenard's work , which has resulted in the discovery of the X - rays . A good deal of what Hertz ...
... important paper , on the transmission of kathode rays through thin metallic films , is particularly interesting as the starting - point for Lenard's work , which has resulted in the discovery of the X - rays . A good deal of what Hertz ...
Página 19
... importance , and it is im- possible to overrate it as a priceless boon for humanity . the same way three most important home engineering feats , viz . the invention of the sewing machine , the adaptation of machinery to the manufacture ...
... importance , and it is im- possible to overrate it as a priceless boon for humanity . the same way three most important home engineering feats , viz . the invention of the sewing machine , the adaptation of machinery to the manufacture ...
Página 244
... important events in the past history of the country , such as the capture of an enemy's city , or the invasion of an enemy , or the com- pletion of some great public work , and unfortunately we have , at present , no means of telling ...
... important events in the past history of the country , such as the capture of an enemy's city , or the invasion of an enemy , or the com- pletion of some great public work , and unfortunately we have , at present , no means of telling ...
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