Chemical News and Journal of Physical Science, Tom 121Chemical news office., 1921 |
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Strona 8
... passing through the roller the silver was etched and washed in order to remove any trace of iron which it might have acquired . The silver foil was then cut by scissors into small pieces , which were then etched and washed as before ...
... passing through the roller the silver was etched and washed in order to remove any trace of iron which it might have acquired . The silver foil was then cut by scissors into small pieces , which were then etched and washed as before ...
Strona 10
... passing through a sieve of 2/10 mm . mesh . For a thickness of the deposit of 6/1000 of i mm.— time of operation , a half - an - hour , with a current below 0.8 ampère per sq . decimetre . Chimie et Industrie , April , 1920 . TUNGSTEN ...
... passing through a sieve of 2/10 mm . mesh . For a thickness of the deposit of 6/1000 of i mm.— time of operation , a half - an - hour , with a current below 0.8 ampère per sq . decimetre . Chimie et Industrie , April , 1920 . TUNGSTEN ...
Strona 14
... passed through the pores of the parch- ment paper , and , by frequent changes of the surrounding water , could be completely removed , leaving inside the dish the silicic acid , thus prov- ing that it was not an ordinary solution ...
... passed through the pores of the parch- ment paper , and , by frequent changes of the surrounding water , could be completely removed , leaving inside the dish the silicic acid , thus prov- ing that it was not an ordinary solution ...
Strona 16
... passing through the laminated or perforated cathode , becomes nega- tively charged and is immediately attracted to the anode cylinder , the water being driven towards the cathode . There is thus obtained a dry layer of clay on the anode ...
... passing through the laminated or perforated cathode , becomes nega- tively charged and is immediately attracted to the anode cylinder , the water being driven towards the cathode . There is thus obtained a dry layer of clay on the anode ...
Strona 18
... passing traffic would ruin the photographs altogether . With reference to the remarks of Sir Herbert Jackson , an osmosed clay muffle , made from a certain clay , lasted thirteen journeys , heated up to 1500 ° C. , as shown by the ...
... passing traffic would ruin the photographs altogether . With reference to the remarks of Sir Herbert Jackson , an osmosed clay muffle , made from a certain clay , lasted thirteen journeys , heated up to 1500 ° C. , as shown by the ...
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