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What do you understand by diffraction?

Updated: 8/9/2023
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12y ago

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When a wave goes past an obstacle it is slightly bent into the area that should be in shade (the classically forbidden zone), this is also seen at a slit, when the light is spread out. This effect is appriciable when the object is approximately the same sive as the wavelength.

This can only be explained using Quantum Electrodynamics. If a screen is placed behind a slit the light makes a larger band than would be expected this is because each photon of light as to be considered to have taken every possible path from the source to the screen. Each path as a probability amplitude associated with it. The probabilities are added in a strang way the lenghth of the probability shown as an arrow are spun at the same rate as the waves frequence these are added by measuring the length from one arrow head to the other if both tails are rotating around the same centre. If both arrows where pointing in the same direction then the probability would be zero, if both arrows where pointing in opposite directions then the probability is squared. Without going into to much detail, the smallness of the slit stops some of the probability amplitude being cancelled out in the forbidden zone.

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12y ago
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12y ago

The difference in the speed of light between media of different densities causes light to bend toward the normal when going from a less dense medium to a more dense medium and away from the normal when going from a more dense medium to a less dense medium.

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14y ago

if there is a small object in the path of the light , light has the tendency to bend around the object and go towards the observer.thyis phenomenon is called diffraction. this u can oberve in a dark room with a small bulb and opposite to it a comparitevely ' slightly big opaque object , see from the opposite side of the cardboard u can see the rays but as u have learn't that light travels at a straight line so it can't be possible but light overcomes this problem as it has dual nature namly wave and straight line. this wave motion of light is calledDIFFRACTION

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14y ago

Because the sound waves have to fit through a smaller gap, it has to compress and bend in order to go through it. So it gets bent

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9y ago

A diffraction pattern is a type of interference. It is formed when a wave or a series of waves passes through an obstacle.

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12y ago

Diffraction is the bending of waves around corners of an obstacle.

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10y ago

It goes through or around an object

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11y ago

light is diffracted what else

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Q: What do you understand by diffraction?
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What is the difference between x-ray diffraction and electron diffraction?

Although many people would not fully understand this electron diffraction gives you only one plane. X-Ray diffraction will give you a scattering of all the planes in one measurement.


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