The term âcatapultâ is used to define a very wide variety of large machines for hurling projectiles and some of the more common variations include the trebuchet, which is a catapult that uses gravity and a seesaw effect to hurl its projectile.
A demyelinating disease is any condition that results in damage to the protective covering (myelin sheath) that surrounds nerve fibers in your brain and spinal cord.
Condensation reaction can be known as dehydration reaction. The condensation reaction occurs when two molecules combine to form a single molecule, together with the loss of a molecule. When this molecule is water, it's known as dehydration reaction. When two separate molecules react, the condensation is termed intermoleculer reaction.