A Brief Introduction to Frank Hertz's Experimental Principle In 19 14, Frank (J. 1882- 1964) and Hertz found that the energy transfer is quantized when electrons and atoms collide inelastic. Their accurate measurement shows that when electrons collide with mercury atoms, the energy lost by electrons is strictly kept at 4.9eV, that is, mercury atoms only receive 4.9eV of energy.

Frank

19 14 years, James franck (1882 ~1964) and Gustar Hertz (1887 ~1975) found that the energy transfer is quantized when electrons collide with atoms inelastic. Their accurate measurement shows that when electrons collide with mercury atoms, the energy lost by electrons is strictly kept at 4.9eV, that is, mercury atoms only receive 4.9eV of energy.

This fact directly proves that the mercury atom has the "completely determined and separated energy state" envisaged by Bohr, which is the first decisive evidence of Bohr's atomic quantization model. Because their work has played an important role in the development of atomic physics, Zeng * * won the physics Nobel Prize of 1925.

In this experiment, we can observe the quantization phenomenon of energy transfer when electrons collide with mercury vapor atoms, and measure the first excitation potential of mercury atoms, thus deepening the understanding of the concept of atomic energy level.

Frank-Hertz experiment provides direct evidence for the existence of energy levels and is a strong support for Bohr's atomic theory. Frank is good at the experimental study of low-pressure gas discharge. 19 13 collaborated with G. Hertz at the university of Berlin to study the relationship between ionization potential and quantum theory. The method used is the reverse voltage method created by Learnard, from which they obtain the ionization potentials of a series of gases, such as helium, neon, hydrogen and oxygen. Later, they specially studied the collision characteristics of electrons and inert gases.

gigahertz

1925 the nobel prize in physics was awarded to james frank of the university of g? ttingen (1882- 1964) and Gustav of Harley university (1887- 1975) for their discovery of the law of atoms being collided by electrons.

Frank-Hertz experiment provides direct evidence for the existence of energy levels and is a strong support for Bohr's atomic theory. Frank is good at the experimental study of low-pressure gas discharge. 19 13 collaborated with G. Hertz at the university of Berlin to study the relationship between ionization potential and quantum theory. The method used is the reverse voltage method created by Learnard, from which they obtain the ionization potentials of a series of gases, such as helium, neon, hydrogen and oxygen. Later, they specially studied the collision characteristics of electrons and inert gases.