July 5, 2020

On:
In: Magnetism

What is a solenoid? A cylindrical coil of enameled ( i.e. insulated ) wire tightly wound in the form of a helix, with diameter of the coil smaller than its length, is called a solenoid.Read More →

On:
In: Heat Energy

What is called Thermal Expansion? Upon heating, all matters which are either solid, liquid or gas expand in length, area or volume. This is called thermal expansion. All matters are composed of atoms and molecules.Read More →