Explain on Wave Theory
Wave Theory: According to Huygens, light is propagated in the form of waves, through a continuous medium. Huygens assumed the existence of an invisible, elastic medium…
Physics
Define and Describe on Fraunhofer Lines
If the solar spectrum is closely examined, it is found that it consists of large number of dark lines. These dark lines in the solar…
What is Fluorescence?
Fluorescence: When an atomic or molecular system is excited into higher energy state by absorption of energy, it returns back to lower energy state in…
Define Phosphorescence
There are some substances in which the molecules are excited by the absorption of incident ultraviolet light, and they do not return immediately to their…
Describe Theory of Light
Theory of Light: Any theory regarding propagation of light must explain the properties of light. Since, light is a form of energy, it is transferred from…
Explain Uses of Electromagnetic Spectrum
The following are some of the uses of electromagnetic waves. Radio waves: These waves are used in radio and television communication systems. AM band is…
Define and Describe on Spectrum
When white light falls on a prism, placed in a spectrometer, the waves of different wavelengths are deviated to different directions by the prism. The…
Explain on Emission Spectrum
When the light emitted directly from a source is examined with a spectrometer, the emission spectrum is obtained. Every source has its own characteristic emission…
Describe on Absorption Spectrum
When the light emitted from a source is made to pass through an absorbing material and then examined with a spectrometer, the obtained spectrum is…
Describe Hertz Experiment of Electromagnetic Waves
Hertz experiment of electromagnetic waves The existence of electromagnetic waves was confirmed experimentally by Hertz in 1888. This experiment is based on the fact that…
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