Frederick Scott Archer experimented with paper pulp, tanno-gelatine, and iodised collodion, and made collodion negatives in the autumn.
Claudet, of London, employed chlorine as a means of increasing the sensitiveness of the iodised silver plate, but it was not sufficiently accelerative to meet the requirements of the Daguerreotype process.
In my letter to Mr. Brayley, I did not describe iodised pictures, and, therefore, it was held that exhibition in the absence of description left the process legally unknown.
The iodised collodion should be kept for at least six weeks before using.
The collodion is iodised by adding the solution to it in the proportion of 1 part solution to 3 parts collodion.
For the arsenious acid solution arsenite of soda is substituted, and for the indigo solution a colourless iodised paper, which is turned blue by the smallest quantity of free acid.
Such ozonometrical or iodised starch-paper when damp turns blue in the presence of ozone, and the tint obtained varies considerably, according to the length of time it is exposed and to the amount of ozone present.
The iodised solution is then poured out, care being taken to rinse the bulb-tube thoroughly, and titrated with hyposulphite of soda, so as to find the remaining proportion of free iodine.
In all processes in which the bromo-iodised collodion is employed 2 grains of bromide of cadmium should be added to each ounce of the collodion.
In this process the ordinary bromo-iodised collodion is employed.
These are employed in cases where bromo-iodised collodion and the nitrate bath are used.
The prepared plate was then placed in the camera, and after an exposure of ten minutes or more, according to the brightness of the day, an impression was made on the iodised silver, but too faint to be visible.
The iodised collodion is then poured over a plate of glass that has been carefully cleaned, and is moved about horizontally until a perfectly uniform film is spread over the surface, to which it adheres firmly.
In conducting the collodion process, the collodion is first iodised by adding to it iodide of potassium and iodide of silver, dissolved in alcohol.
The iodised silver remaining on the plate not acted on by light, was washed away by a solution of hyposulphite of soda, and the picture could then be exposed without injury.
That mixture Mr. Talbot calls gallo-nitrate of silver, and with it wash over the surface of the iodised paper.
The paper thus prepared is called "iodised paper;" it is not very sensitive to light, and may be kept for some time without spoiling.
Daguerre was thus successfully working out to perfection the plan of producing beautiful naturally-impressed pictures oniodised silver surfaces, Mr. Fox Talbot was at the same time nearly attaining the same results.
But as I was not aware of the power of mercurial vapour to bring out the latent impressions, I found my plates of iodised silver deficient in sensibility, and therefore continued to use in preference my photogenic drawing paper.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "iodised" in a variety of sentences. We hope that you will now be able to make sentences using this word.
