Nature, Volume 103Sir Norman Lockyer Macmillan Journals Limited, 1919 |
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Página 65
... manufacture of homogene- ous glass suitable for optical in- struments dates practically from the time when the achromatisa- tion of lenses became possible . Up to that time selected pieces of sheet glass served for the manufacture of ...
... manufacture of homogene- ous glass suitable for optical in- struments dates practically from the time when the achromatisa- tion of lenses became possible . Up to that time selected pieces of sheet glass served for the manufacture of ...
Página 67
... manufacture of this important material , the nation should not be dependent on a single source of supply , and the Derby Crown Glass Works , Ltd. , were encouraged to commence its manufacture , and they have already been suc- cessful in ...
... manufacture of this important material , the nation should not be dependent on a single source of supply , and the Derby Crown Glass Works , Ltd. , were encouraged to commence its manufacture , and they have already been suc- cessful in ...
Página 129
... manufacture in quantities and so reduce cost . The Committee also emphasises the importance of scientific and industrial research , and regards with satisfaction the formation of associations in some trades for that purpose , assisted ...
... manufacture in quantities and so reduce cost . The Committee also emphasises the importance of scientific and industrial research , and regards with satisfaction the formation of associations in some trades for that purpose , assisted ...
Índice
October 9 1919 | xxxii |
Stefanik Genl M obituary 231 | xxxviii |
Storkerson S Arrival with his party on the Alaskan | 8 |
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