The discreteness of atomic energy levels was first shown directly in the Franck-Hertz experiment. This experiment is one of the […]
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Category: Physics
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Energy levels in an atom
In Figure 25.1, we’ve drawn a few of the energy levels of a hypothetical atom. Let’s start by looking at […]
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Quantum theory
Some of the important postulates of the Bohr’s model of the atom were that the electrons moved around the nucleus […]
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Photoelectric Effect Applications
Below are the applications of Photoelectric effect: The photoelectric effect is used in the photoelectric cell which converts a light […]
INTRODUCTION In 1887, photoelectric effect was invented by the scientist H. Hertz. When we passing a light into a material, the material […]
Radioactivity is a spontaneous process. It goes on independent of external control. it is not affected by temperature or pressure […]
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Peaceful uses of radiation
Although scientists have only known about radiation since the 1890s, they have developed a wide variety of uses for this […]
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Radioactivity
Radioactivity refers to the particles which are emitted from nuclei as a result of nuclear instability. Because the nucleus experiences […]
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Nuclear Energy
Nuclear Energy The protons and neutrons (nucleons) in the nucleus of each atom are held together by very powerful nuclear […]
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Artificial Radioactivity
If the radioactivity is induced in an element by irradiation with, for example, neutrons, the process is known as artificial […]