Derivation Of Formulas For Energy

I had a tough time deriving formulas for mechanical energy when given in school as assignment or as a question in exams. I don’t want any of you reading this to experience the same feeling. So, I would like to show you how we derive the conventional formulas for potential and kinetic energies to be later used in problems.

Read more

Newton’s Color Disc

A Newton disc is a disc with segments in rainbow colours. When the disc is rotated, the colours fade to white; In this way Isaac Newton demonstrated that white light is a combination of the seven different colours found in a rainbow. A Newton Disc can be created by painting a disc with the seven different colours. A combination of red, green and blue in the circular disc will yield the same result. This is due to the phenomenon called persistence of vision. It can easily be made at home using a card board piece It was an important discovery …

Read more