The Boston Journal of Philosophy and the Arts, 1-3권Cummings, Hilliard, & Company, 1824 |
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6개의 결과 중 1 - 5개
130 페이지
... iridium and osmium , and latterly , steel with chromium . In this last series of experiments we were particularly fortunate , having by practice acquired consider- able address in the management of the furnaces , and suc- ceeded in ...
... iridium and osmium , and latterly , steel with chromium . In this last series of experiments we were particularly fortunate , having by practice acquired consider- able address in the management of the furnaces , and suc- ceeded in ...
132 페이지
... iridium and osmium from 1 to 80 per cent of platina was perfectly com- bined with steel , in buttons of from 500 to 2000 grains . With rhodium , from 1 to 50 per cent was successfully used . Equal parts by weight of steel and rhodium ...
... iridium and osmium from 1 to 80 per cent of platina was perfectly com- bined with steel , in buttons of from 500 to 2000 grains . With rhodium , from 1 to 50 per cent was successfully used . Equal parts by weight of steel and rhodium ...
133 페이지
... iridium and osmium , made in the large way , is also of great value ; but the same cause , namely , the scarcity and difficulty of procuring the metals , will operate against its very general introduction . A sufficient quantity of ...
... iridium and osmium , made in the large way , is also of great value ; but the same cause , namely , the scarcity and difficulty of procuring the metals , will operate against its very general introduction . A sufficient quantity of ...
135 페이지
... iridium and osmium , the alloy should be acted on by dilute sulphuric acid , and the residuum boiled in the acid ; the powder left is to be collected and heated with caustic soda in a silver crucible to dull red- ness for a quarter of ...
... iridium and osmium , the alloy should be acted on by dilute sulphuric acid , and the residuum boiled in the acid ; the powder left is to be collected and heated with caustic soda in a silver crucible to dull red- ness for a quarter of ...
140 페이지
... iridium and osmium ; but this part of the subject certainly merits further investiga- tion , offering a wide and interesting field of research . Some attempts to form other combinations of this description proved encouraging , but we ...
... iridium and osmium ; but this part of the subject certainly merits further investiga- tion , offering a wide and interesting field of research . Some attempts to form other combinations of this description proved encouraging , but we ...
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alloy ammonia animal Apennines appears Arequipa ascend atmosphere body bones calcareous carbonate carbonic acid chlorine circumstances coast colour condensed considerable containing covered crater crystals degree distance earth effect Egyptians elephant elevation embalming equal examined exist experiments feet felspar females fluid formation fossil Gabbro Giel heat Herodotus horns hydrogen inches increments Indians iridium iron islands Lake land latter length limestone magnesia males mammoth mass Mastodonte ment mercury metal miles mountain mummies muriatic acid nature nearly observed obtained opal petrifactions Pichu Pichu pieces platina platinum population portion precipitate present preserved probably produced quantity remains remarkable resemblance rhodium river Robert Seppings rocks salt Scoresby sea-water ship side slaves species specific gravity specimens steam steel sternum stone strata substance sulphuric acid summit supposed surface teeth temperature tion trachytic tube vapour vessel volcanic whole wood