Brain Storming

   1.      why power radiated by an antenna is inversely proportional to the square of the wave length?

How we make colourful glasses

1. How colorful glasses are made ?

2. Why the powder of a colorful glass pan is            white?

3. What is a pigment ?

4. Does black color pigments exists ?

Light and Colourful World

What is Light ?

How can we see different colors ?

What makes glass a transparent material ?