The Physical Basis of SocietyD. Appleton, 1916 - 406 من الصفحات |
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الصفحة 1
... element but bearing such relation to hydrogen that it is supposed to be a precursor thereof ; hence these are called Protohydrogen stars . Helium is also present with hints of magnesium and calcium . In the helium - gas stars ( Taurus ...
... element but bearing such relation to hydrogen that it is supposed to be a precursor thereof ; hence these are called Protohydrogen stars . Helium is also present with hints of magnesium and calcium . In the helium - gas stars ( Taurus ...
الصفحة 2
... elements . This same gradation can be produced under high pres- sure by electricity , and thus a glimpse can be had in the laboratory of the process of world - making . Watery vapors appear and on the planets bodies of snow and water ...
... elements . This same gradation can be produced under high pres- sure by electricity , and thus a glimpse can be had in the laboratory of the process of world - making . Watery vapors appear and on the planets bodies of snow and water ...
الصفحة 3
... elements which , so far as we can tell , are distinct . Nearly 99 per cent of the earth's surface including water ( as the fol- lowing table shows ) is made up of eight of these , no other element contributing one per cent . Even such ...
... elements which , so far as we can tell , are distinct . Nearly 99 per cent of the earth's surface including water ( as the fol- lowing table shows ) is made up of eight of these , no other element contributing one per cent . Even such ...
الصفحة 4
... elements have not been found in nature save as compounds and man has reduced them in his laboratory . Aluminum , first produced in 1827 , has become commercially important ; while the metal calcium remains merely a curiosity . In like ...
... elements have not been found in nature save as compounds and man has reduced them in his laboratory . Aluminum , first produced in 1827 , has become commercially important ; while the metal calcium remains merely a curiosity . In like ...
الصفحة 5
... elements or com- pounds which enter largely into the structure of living organisms are not merely those whose properties enable them to maintain life but are the only ones possessing these properties . He emphasizes , therefore , the ...
... elements or com- pounds which enter largely into the structure of living organisms are not merely those whose properties enable them to maintain life but are the only ones possessing these properties . He emphasizes , therefore , the ...
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