What is Elasticity

Elasticity exists in metals in three distinct ways:
First, in the form of traction. Hang a weight on a wire and it will stretch a certain amount. When the weight is removed the wire shrinks back to its original length.

Second: If the weight on the wire is rotated, so as to twist it, and the hand is taken from the weight, it will untwist itself, and go back to its original position. This is called torsion.

Third: A piece of metal may be coiled up like a watch spring, or bent like a carriage spring, and it will yield when pressure is applied. This is called flexure.

Certain kinds of steel have these qualities in a high degree.

Excerpt from:
Title: Practical Mechanics for Boys
Author: J. S. Zerbe

Read more

What is a Solenoid? Part of an electromagnet is called a solenoid.  A solenoid is a coil of wire that has an electric current flowing through it. When an electric cu...
How to Remove a Tight Ring From a Finger With Stri... When a ring cannot be removed easily from the finger, take a string or thread and draw one end through between the ring and the flesh.Coil the other e...
WHO INVENTED THE PARACHUTE? Imagine if you find yourself into an empty space at the height of 4-5 miles above the Earth, and yet you have landed on the ground as if you jumped fr...
Fun activities for kids outside – Animated E... The Elephant is one of the oldest forms of animated animals, and is at the same time one of the most popular. Four or five yards of gray cambric shoul...
Close Menu