What is Gold Number?
Added on 19 February 2010
Zigmondy introduced the term gold number to evaluate quantitatively the protective power of different lyophilic colloids. It may be defined as ‘least quantity of protective colloid in milligrams
Number Systems
Added on 29 July 2009
The computer stores numbers, letters and other characters in a coded form due to its electronic characteristics ….
Posted in Information Technology
Concept of Length
Added on 24 July 2009
Length of an object can be defined as the distance of separation between any two points at the extreme ends of the object, it is considered as ‘distance’
Posted in Physics
Basics Positive and Negative Angles
Added on 20 July 2009
Angle generated by a counter-clockwise rotation, we call angle a Positive Angle. On the other hand, if an angle is generated by a clockwise rotation we call angle a Negative Angle
Posted in Trigonometry
What is a Colloid?
Added on 16 July 2009
Colloid is a heterogeneous mixture in which particle size is intermediate of true solution and suspension. Smoke from a fire is example of colloidal system ..
Posted in Colloids
Examples of Colloids
Added on 12 July 2009
Examples of Colloids discuss different types of colloidal dispersions and their examples. Colloids are important chemicals which are used extensively used to produce commercial products.
Posted in Colloids
Lyophobic Colloid
Added on 09 July 2009
Lyophobic colloids are liquid hating colloids (Lyo means solvent and phobic means hating). In Lyophobic sol, weak forces of interaction exist between colloidal particles and liquid.
Posted in Colloids
Lyophilic Colloids
Added on 02 July 2009
Lyophilic colloids are liquid loving colloids (Lyo means solvent and philic means loving). Colloids are mixed with the suitable liquid, high force of attraction exists between colloidal particles and liquid.
Posted in Colloids
Difference between Lyophobic and Lyophilic
Added on 25 June 2009
It provides comprehensive difference between Lyophilic and Lyophobic sols in a concise way. The differsences between the two are arranged in order of their importance.
Posted in Colloids
Properties of Colloids
Added on 10 June 2009
Colloids show some unique properties like Tyndall Effect, Brownian Movement, Colligative Property & Electro Osmosis which we discussed here
Posted in Colloids
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nicol prism explanation
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