Chapter 1st:- Atomic structure and Periodic table 1st year Book
(Page 3)

Experimental Verification of De Broglie Equation

The revolutionary postulate of de-Broglie has been confirmed by Davisson and Germer’sexperiment in 1927. Similarly, experiments carried out independently by G.P. Thomson in 1928 and later Stern observed that the beams of heavier particles (like H2, He…. etc) showed diffraction patterns when reflected from the surfaces of crystals.

Davisson and Germier experiment

The pattern of the electron diffraction obtained by these scientists was found to be similar to that of X-ray diffraction (since the wave nature of -rays is well established hence electrons also should have a wave nature), In addintencity of reflection of lightition, they observed that the wavelength of the electrons was also found to be similar with that calculated by de-Broglie. Hence, the dual nature of the electron and the quantitative nature of the De Broglie Equation were established with high accuracy.

Applications of De-Broglie Concept:

The main applications of de Broglie’s concept are

1. The development of the electron microscope.
2. It theoretically supports Bohr’s second postulate.

De Broglie equation

de Broglie equations

Related Topic | Atomic Structure and Periodic Table

Bohr’s Atomic Model De Broglie Hypothesis
De Broglie Equation Heisenberg uncertainty Principle
Schrodinger Wave Equation Shapes of orbitals
Quantum Numbers Hunds Rule
Pauli Exclusion Principle Energy level diagram of Atom
Aufbau Principle Screening effect or shielding effect
Periodic Table Moseley Periodic law
Classification of elements
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