The Encyclopedia Americana: A Library of Universal Knowledge ...Encyclopedia Americana Corporation, 1924 |
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Zadetki 1–5 od 100
Stran 13
... sometimes used , but is very inaccurate , and should be used only to designate a very small photograph ; e.g. , a photograph an eighth of an inch square of the Niagara Falls is a micro- photograph . Simple photomicrographs may be made ...
... sometimes used , but is very inaccurate , and should be used only to designate a very small photograph ; e.g. , a photograph an eighth of an inch square of the Niagara Falls is a micro- photograph . Simple photomicrographs may be made ...
Stran 18
... sometimes at- tended with the happiest results . " The importance of light for healthy growth and development has been recognized by san- itarians for many years . Solaria or sun - rooms are a part of some modern hospitals . Houses and ...
... sometimes at- tended with the happiest results . " The importance of light for healthy growth and development has been recognized by san- itarians for many years . Solaria or sun - rooms are a part of some modern hospitals . Houses and ...
Stran 20
... sometimes produced on the eyes . It has mainly been used in cases of lupus vul- garis , and lupus erythematosa , birth - marks , acne , and rodent ulcer . Dr. Rollier of Switzer- land has had great success in employing_the sun's rays ...
... sometimes produced on the eyes . It has mainly been used in cases of lupus vul- garis , and lupus erythematosa , birth - marks , acne , and rodent ulcer . Dr. Rollier of Switzer- land has had great success in employing_the sun's rays ...
Stran 25
... sometimes studied by immersing a crystal in a solvent . This may result in the development of new faces conforming in position to the sym- metry of the crystal . Sometimes a sphere is cut PHYLOGENY-PHYSICAL CRYSTALLOGRAPHY ...
... sometimes studied by immersing a crystal in a solvent . This may result in the development of new faces conforming in position to the sym- metry of the crystal . Sometimes a sphere is cut PHYLOGENY-PHYSICAL CRYSTALLOGRAPHY ...
Stran 26
... sometimes devel- oped by pressing or tapping a conical point against a face of a crystal . Examples are mica and common salt . The Properties Dependent upon Elasticity , If rods of the same length , breadth and thickness are cut from ...
... sometimes devel- oped by pressing or tapping a conical point against a face of a crystal . Examples are mica and common salt . The Properties Dependent upon Elasticity , If rods of the same length , breadth and thickness are cut from ...
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