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Coherent sources are sources of light with a constant phase difference. The conditions for this are that there is a constant phase difference and that the light is of the same wavelength.
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How do you produce two coherent sources of light?
two coherent light sources are produced by splitting a single light source
What are examples of coherent sources?
lasers
Why are two independent sources of light used to illuminate the two slits in Young's double slit experiment?
You have to correct the question as,Why are two independent sources of light not used to illuminate the two slits in Young's double slit experiment?We need coherent sources. But two independent sources would emit waves with varying phase difference which makes waves non coherent.
How are the two coherent sources obtained in the young double slit experiment?
By splitting what is originally a single beam of light.
Why should the two coherent sources be monochromatic?
If they are not, the interference patterns become much more complicated, and vary over time.
How do you produce two coherent sources of light?
two coherent light sources are produced by splitting a single light source
What are examples of coherent sources?
lasers
What is the definition of coherent sources?
Coherent sources are those that radiate waves with same phase or constant phase difference. They're very much essential for producing Fresnel's type of diffraction.
How are two coherent sources formed by Fresnel's bi-prism?
Two coherent sourses are produced with the bi-prism by the phenomenon of refraction through the refracting surfaces.
Why are two independent sources of light used to illuminate the two slits in Young's double slit experiment?
You have to correct the question as,Why are two independent sources of light not used to illuminate the two slits in Young's double slit experiment?We need coherent sources. But two independent sources would emit waves with varying phase difference which makes waves non coherent.
What is the formula for fringe width?
Fringe width (for dark and bright bands): D * wavelength / d where, D = distance between screen and coherent sources (metres), wavelength = wavelength of light used is experiment (nanometres), d = distance between the 2 coherent sources (millimetres).
How are the two coherent sources obtained in the young double slit experiment?
By splitting what is originally a single beam of light.
Why should the two coherent sources be monochromatic?
If they are not, the interference patterns become much more complicated, and vary over time.
Why do you use biprism in fresnel biprism experiment?
To make two coherent source for interference .Biprism make two sources.
What is the difference between a monochromatic light and coherent light waves?
The term "mono" refers to a singular object or subject. The term "chrome" refers to colors. The term "monochrome" is a reference to a single color. ie., if two lights are monochromatic that means they have same wavelength. If two waves are monochromatic (having the same wavelength) and are of the same phase, these two waves are defined as coherent waves. Sources generating such waves are known as coherent sources.
What is the meaning of two coherent source?
The meaning it carries by saying that a source A and Source B are coherent source means that for a certain place of consideration the light from these sources arrive at the same phase or at such phases whose difference doesn't change over time.
Why two independent sources cannot behave as a coherent sources?
Light is emitted due to the de-excitaton of electrons from higher orbits of the various atoms of the light source.The de-excitation can also be to different levels in different atoms resulting in emission of different wavelengths.A light source will have numerous atoms in it.When you take two light sources it is not possible for all the atoms to get de-excited to the same shell at the same time(causing phase difference) that is why two independent sources cannot be coherent.
