01 Introduction to Light

• Major development in the study of light happened in the 19th Century.
• James Clark Maxwell is the father of the Electromagnetic theory.
• Change in both the electric and magnetic fields cause electromagnetic disturbances.
• Electromagnetic waves travel through space.
• They are transverse in nature.
• They do not need a medium for propagation.
• Energy is transferred from one point to another point.
• Heinrich Hertz produced electromagnetic waves by means of oscillating electric charges.
• He proved that the electromagnetic waves behaved like light waves.
• The predictions were that light waves are electromagnetic waves.
• They are the visible part of the electromagnetic spectrum.

© Garuda e-Learning Solutions Design & Maintain By, GARUDA