Froude Number

This number is significant in fluid Mechanics. It relates inertia force and gravity force of the flow. It’s a ratio of velocity to square root of the product of L and g. We can also define Froude Number as the ratio of inertia force to the gravity force.

carbon nanotubes

known as CNT is actually a carbon molecule. they are very thin and can be used for many applications. They are synthesized by many methods. Important methods are pyrolysis method and arc discharge method. it assumes three forms namely armchair, zigzag and chiral. They are mechanically strong, highly elastic, possess high thermal conductivity, very stable, metallic or semiconducting depending upon size and have high current carrying capacity.

DVD and ISDN

DVD is Digital Video Disk
ISDN is Integrated Sevices Digital Network