What is Inverse square law

There is a law in physics commonly known as inverse square law. As the name suggests, in this law some quantity is inversely related to another quantity. Let us discuss in detail. Continue reading “What is Inverse square law”

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Gravitational force and its properties

Gravitational force is the weakest force in nature. There are many properties of gravitational force, but first of all let us discuss about the various fundamental forces present in nature. There are mainly four types of forces exist in nature:
1. Gravitational force
2. Weak nuclear force
3. Electromagnetic force
4. Strong nuclear force.
Today I will discuss about the gravitational force
We all know that earth and other planets revolve around the sun but why? We are attracted towards the earth due to gravity of earth or in simple words force of attraction of earth. Basically gravitational force is the force between any two objects. The objects can be microscopic or macroscopic. Continue reading “Gravitational force and its properties”

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Sol Gel Technique for nanomaterials

Why the name sol-gel and technique

The sol-gel technique for synthesis of nanomaterials  is a wet- chemical technique. It is also known as chemical solution deposition. Such techniques are used for the fabrication of materials starting from a chemical solution (sol, short for solution) which acts as the precursor for an integrated network (or gel) of either discrete particles or network polymers. Precursors in the form of acetates or carbonates or nitrates are taken and then dissolved in deionized water. This starting material is used to produce a colloidal suspension known as gel. After that a gelling agent for example, polyvinyl alcohol is added and this will produce a gel. Continue reading “Sol Gel Technique for nanomaterials”

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