Word: potassium
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...would further aid his navigators by having them drop, as they fly, minims of potassium permanganete upon the ice-floes. The purple stains moisture would make of these droppings would be readily visible trailblazers from quite a height, providing no snow fell...
Increase of 1½c to 2¼c on potassium chlorate (TIME...
...President Coolidge, by proclamation following the unanimous recommendation of the Tariff Commission, and in accordance with his power under the "flexible" provision of the Tariff Act, increased the duty on potassium chlorate from 1? to 2½ ? a pound (an increase of 50%, the maximum permitted...
...world is short of bromine, Is this important? Yes, if photography, especially moving pictures, are important. Bromides of silver and potassium are essential to their welfare. Yes, if ethyl motor fluids are important; if certain medical sedatives are important. The world is short of bromine, and the chief sources?salt deposits in Prussian Saxony, brines in Michigan, Ohio, Pennsylvania, West Virginia and Chile ?do not bid fair to replenish the supply...
...synchronizer, the cylinders at both ends are started simultaneously and turned at the same rate of speed. The light beam travels in a continuous line over the picture, until it reaches the opposite side. In the center of the cylinder is a "photoelectric cell," consisting of a rod of potassium in a vacuum tube. It is so sensitive to light that any ray falling on it causes the electrons to fly from its surface, generating an electric current. As the cylinder revolves, the point of light passes through the transparent film and falls upon the potassium. In the dark parts...