The Technical World Magazine, Volume 4Technical World Company, 1906 |
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Results 6-10 of 100
Page 17
... light . Usual- ly the hands of a watch can easily be seen ; but in the case of a long totality ( the greatest possible is 7 minutes 58 seconds ) , the darkness . is more intense and artificial lights be- come necessary . There is one ...
... light . Usual- ly the hands of a watch can easily be seen ; but in the case of a long totality ( the greatest possible is 7 minutes 58 seconds ) , the darkness . is more intense and artificial lights be- come necessary . There is one ...
Page 42
... malicious ignorance of the people of the locality , it must be rebuilt . If the peg is gone , the party digs down three feet or more until a bottle or stone jar comes to light , also with a mark upon it. 42 THE TECHNICAL WORLD MAGAZINE.
... malicious ignorance of the people of the locality , it must be rebuilt . If the peg is gone , the party digs down three feet or more until a bottle or stone jar comes to light , also with a mark upon it. 42 THE TECHNICAL WORLD MAGAZINE.
Page 43
... light , also with a mark upon it , indicating again the position of that " point . " This mark , called a ground mark , is of course not found beneath church steeples or tall chimneys , or temporary signals , but is a most impor- tant ...
... light , also with a mark upon it , indicating again the position of that " point . " This mark , called a ground mark , is of course not found beneath church steeples or tall chimneys , or temporary signals , but is a most impor- tant ...
Page 54
... light from an oil lamp is thrown on the mirror , which reflects it on a proper scale . This beam of light is technically known as the " spot . " When there is no electricity energizing the galvanometer , the " spot " is at zero in the ...
... light from an oil lamp is thrown on the mirror , which reflects it on a proper scale . This beam of light is technically known as the " spot . " When there is no electricity energizing the galvanometer , the " spot " is at zero in the ...
Page 55
... light spring levers , crossed at right angles , above and below , by con- tact - bearing metallic bars . The cable is connected to one lever , and a ground wire to the other ; while to the two trans- verse bars are connected ...
... light spring levers , crossed at right angles , above and below , by con- tact - bearing metallic bars . The cable is connected to one lever , and a ground wire to the other ; while to the two trans- verse bars are connected ...
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