from The Century Dictionary.
- noun A hypothetical compound of platinum monoxid with the oxid of a more basic or electropositive metal. No such compound has actually been obtained in a definite form.
- noun An alloy of steel with forty to fifty per cent. of nickel, used to replace the metallic filaments of platinum or electric incandescent or glow-lamp bulbs. It has so nearly the same coefficient of expansion as that of glass that difficulties are avoided which occur when a more expansive metal is to be sealed into glass. Used particularly in France.
Sorry, no etymologies found.
To dispense with this preliminary sizing Captain Pizzighelli adds gum arabic to the platinite solution, whereby the sizing and sensitizing are done in one operation.
They are generally due to metallic dust in the paste of the paper, or from particles of undissolved salt in the platinite solution.
The developer consists of oxalate of potash and potassic chloro-platinite -- about thirty grains of the platinum salt to half an ounce of oxalate forming about six ounces of solution; a great many variations, however, may be made in the proportions of platinum salt and oxalate, and different effects secured.