Electrons: When a high tension discharge passes between electrodes sealed into a partially evacuated vessel, the gas becomes luminous showing a series […]
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Author: StopLearn Team 2
Spectra Embedded in an atom which consists of a nucleus that is positively charged and which revolves round the orbit […]
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Franck-Hertz Experiment
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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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 […]
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Photoelectric Effect
PHOTOELECTRIC EFFECT INTRODUCTION In 1887, photoelectric effect was invented by the scientist H. Hertz. When we passing a light into a 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
RADIOACTIVITYRadioactivity refers to the particles which are emitted from nuclei as a result of nuclear instability. Because the nucleus experiences […]