its done.if you want you may put a page beside it to look clearly at the colours. i am argha halder from naogaon,bangladesh.i read at biam laborator...
today i will show you how to make a prisme with a pen.for this you will need a pen thats all.the image may not be clear because it is taken from a mobile phone.i learnt to make this when i was writing.the pen was held against the sun and suddenly i saw a bunch of colours on my hand.i understood that it became like a prisme.R
okay this are the things you will need:
1)a pen body having flat edges