Sunday, November 27, 2011

rubik's cube - how to solve step by step illustration

I have learned to solve the rubik's cube and I have given a video in this link. There are English subtites also.
http://www.youtube.com/watch?v=RJUAqIwYhfM

Friday, November 25, 2011

How to remove mercury from gold ornaments(jewellery)?

Mercury when exposed to gold makes a amalgam of mercury which is a silver in color. The mercury may have accidentally fallen on to the ornaments from a thermometer,BP apparatus etc. DO NOT PANIC,