The idea had great significance for the continued evolution of quantum mechanics. Photo from the Nobel Foundation archive.
Work In the beginning of the 20th century, quantum physics evolved from the idea that energy is conveyed in only certain fixed amounts. Instead, electrons move from stable standing wave pattern to another standing wave patterns. Louis de Broglie described this phenomena as resonant coupling. He could explain why there were only certain orbits which contain electrons. In the following years, chemists could conduct another theory of atomic model.
One of the useful theory about atomic theory is quantum numbers. These quantum numbers are the properties which describe the electrons distribution within the atom. In the atomic quantum numbers, we will learn about principle quantum number, secondary quantum number, magnetic quantum number and spin quantum numbers.
As we mentioned before, Louis de Broglie quantum theory gave the strong impact to many studies especially in physics and chemistry. His discovery were the basic principle used for the conducting the research about wave mechanics theory.
This quantum theory obviously enhanced our understanding about physical nature in the atom scale. In the chemistry study, this quantum theory can give the basic information for predict the different type of hydrogen element. Four quantum numbers explain the arrangement of electrons within the atom.
These above numbers describe the probability of electrons distribution in atom. They can actually define the exact position of electrons in atom. You can get the probability distributions by knowing the secondary quantum number l and magnetic quantum number ml. While you can get the potential energy of electron by finding out their main quantum number n dan secondary quantum number l. Meanwhile, that is the Louis de Broglie Quantum Theory in chemistry knowledge. Close Menu Organic Chem. Before the acceptance of the de Broglie hypothesis, diffraction was a property that was thought to be exhibited only by waves.
Therefore, the presence of any diffraction effects by matter demonstrated the wave-like nature of matter. For this reason, it is proper to submit periodically to a very searching examination, principles that we have come to assume without any more discussion. These experiments served as the basis for developing the general theory nowadays known by the name of wave mechanics, a theory which has utterly transformed our knowledge of physical phenomena on the atomic scale.
The concept of matter waves in quantum mechanics reflects the wave—particle duality of matter. The waves became later known as de Broglie waves and in his theory, the scientist shows that the wavelength is inversely proportional to the momentum of a particle. Also, the frequency of matter waves , as deduced by de Broglie , is directly proportional to the total energy E sum of its rest energy and the kinetic energy of a particle [1,2]. Recently, it was also found that investigating the elementary process of diffusion gives the theoretical evidence of the relation of matter wave, regardless of the photon energy.
It is thus revealed that the relation of matter wave is now not a hypothesis but an actual equation relevant to a characteristic of micro particle. The wave-like behavior of matter is crucial to the modern theory of atomic structure and particle physics. When it behaves as a wave, however, it has an energy that is proportional to its frequency.
By simultaneously assuming that an object can be both a particle and a wave, de Broglie set up the following equation. By rearranging this equation, he derived a relationship between one of the wave-like properties of matter and one of its properties as a particle.
As noted in the previous section, the product of the mass of an object times the speed with which it moves is the momentum p of the particle. Thus, the de Broglie equation suggests that the wavelength of any object in motion is inversely proportional to its momentum.
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