How Variety of Color is Secured
Simple Science
How Variety of Color is Secured
Dyeing:
The color which is fixed on the fabric as a result of chemical action between mordant and dye is frequently very different from that of the dye itself. Logwood dye when used alone produces a reddish brown color of no value either for beauty or permanence; but if the fabric to be dyed is first mordanted with a solution of alum and oxalic acid and is then immersed in a logwood bath, it acquires a beautiful blue color.
Moreover, since the color acquired depends upon the mordant as well as upon the dye, it is often possible to obtain a wide range of colors by varying the mordant used, the dye remaining the same. For example, with alum and oxalic acid as a mordant and logwood as a dye, blue is obtained; but with a mordant of ferric sulphate and a dye of logwood, blacks and grays result. Fabrics immersed directly in alizarin acquire a reddish yellow tint; when, however, they are mordanted with certain aluminium compounds they acquire a brilliant Turkey red, when mordanted with chromium compounds, a maroon, and when mordanted with iron compounds, the various shades of purple, lilac, and violet result.
How Sound is transmitted through Air
Weather Forecasts
How to Breathe
Ammeters
Compound Machines
A Cheap Well for Campers
Carbon
The Barometer
The Energy of the Sun
Strings and their Tones
Man's Strength not Sufficient for Machines
Methods of illumination
Test your English Language
Dhirubhai Ambani
Healthy Cheek
Amazing US Lakes for Summer Vacation
Saffron Or Kesar Get Beautiful Skin
Horse Breeds
Fashion Designer Cars in the world




