Chemical News and Journal of Industrial Science, Tomy 31-32Chemical news office., 1875 |
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Strona 12
... glass frame , suspension on a fine glass axis resting on thin glass rods , and many other devices , I finally adopted the following mode of support : - The pointed half of a small sharp needle is broken off about half a millimetre ...
... glass frame , suspension on a fine glass axis resting on thin glass rods , and many other devices , I finally adopted the following mode of support : - The pointed half of a small sharp needle is broken off about half a millimetre ...
Strona 44
... glass then commenced to soften ; I therefore , at the higher exhaustions , paid most atten- tion to the initial movement of the glass beam , merely keeping the lamp beneath long enough to see if the con- tinued heating drew the beam ...
... glass then commenced to soften ; I therefore , at the higher exhaustions , paid most atten- tion to the initial movement of the glass beam , merely keeping the lamp beneath long enough to see if the con- tinued heating drew the beam ...
Strona 128
... glass at measured distance from each other ; the image may then be focussed on card with distance marked on it . Make glass cell . Take three strips of plate glass in . thick by in . wide ; two being 4 in . long and one 3 in . Cement ...
... glass at measured distance from each other ; the image may then be focussed on card with distance marked on it . Make glass cell . Take three strips of plate glass in . thick by in . wide ; two being 4 in . long and one 3 in . Cement ...
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