Shiv Dial Sud & Sons

Atomic Spectra Experiment

OBJECTIVES

• To understand the concept of diffraction of light.
• To measure and analyze the emission spectral lines of different elements.

PRINCIPLE

The source of electromagnetic radiation is atoms. When the atoms of an element are in an excited state, they return to a lower energy state by emitting electromagnetic (EM) radiation. The transition of the electrons in the atom from higher energy level to a lower unique energy levels for the occupation of electrons, due to this the EM spectrum emitted is a unique signature of an element or a substance. The study of the characteristics of EM radiation emitted by atoms is called Atomic Emission Spectroscopy.