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# the phenomenon of bending of light at the corners of an obstacle is called

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### Mohammed

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D

## Diffraction

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Updated on : 2022-09-05

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Correct option is D)

Explanation:

∙ The bending of a beam of light around the corners of the obstacles is called diffraction.

∙ The silver lining which we witness in the sky is caused due to diffraction of light. When the sunlight passes through or encounters the cloud, a silver lining is seen in the sky.

Correct option: D

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## Bending of Light

Differential bending of light of different wavelengths by a refracting medium.

From: Encyclopedia of Physical Science and Technology (Third Edition), 2003

## Related terms:

Energy EngineeringAntennaAmplifierTelephoneAmplitudesElectric Potential

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## Glass molding process for microstructures

T. Zhou, J. Yan, in Microfabrication and Precision Engineering, 2017

### 8.1.1.2 Diffraction

Diffraction, which is defined as the bending of light around the corners of an obstacle or aperture into the region of geometrical shadow of the obstacle, is another significant property of microstructures.

Microstructure arrays with small element size, for instance, 0.5~5 μm, mainly achieve optical performance by their interference and diffraction reflection properties. They can produce entirely different phenomena compared with macro lenses when light goes through microstructure arrays. As shown in Fig. 8.3, microstructure arrays are equipped with properties of one-dimensional diffraction and two-dimensional diffraction. They are probably able to accomplish antireflection and other goals such as polarization beam splitting, optical waveguide coupling, light beam transformation and integration if we focus on the complicated design of cycle structures and the shape of microstructure arrays.

Figure 8.3. Function and application of microstructure arrays with small element size: (A) one-dimensional transmission diffraction, (B) one-dimensional reflection diffraction, (C) two-dimensional diffraction.

The most common use of optical components with microstructures based on diffraction principle is diffraction grating, which is a component of optical devices consisting of a surface ruled with close, equidistant and parallel lines for the purpose of resolving light into spectra. As a typical application of diffraction grating, optical spectrometers are widely applied in the field of process control, plasma diagnostics, spectroscopic analysis of gases and liquids (Gruger, Wolter, Schuster, Schenk, & Lakner, 2003). The working principle of a spectrometer is shown in Fig. 8.4. The electrons enter into the magnet gap from the O point placed at the accelerator isocenter. An image plate shielded by lead is used to detect the electrons that are deflected between the two magnets.

Figure 8.4. Drawing of the spectrometer setup (Gobet et al., 2016).

The diffraction grating can also be used in the imaging system, fiber grating, and encoder. However, one of the most important usages of diffraction grating is the sensor that is used in machine tools and measurement equipment.

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## Relativity, General

James L. Anderson, in Encyclopedia of Physical Science and Technology (Third Edition), 2003

### VI.B.1 Bending of Light

One of the more spectacular confirmations of the general theory came in 1919, when the solar eclipse expedition headed by Eddington announced that they had observed bending of light from stars as they passed near the edge of the sun that was in agreement with the prediction of the theory. Derivations of the bending that use only the principle of equivalence or the corpuscular theory of light predict just half of the bending predicted by the general theory.

The angle of bending for light passing at a distance d from the center of the sun can be computed by using the equation of motion (19) with gμνdxμ/dλ dxν/dλ = 0. Using the form for the gravitational field given by Eq. (37), the angle of bending is given by

(38) Θ=(1+γ)2GM⊙/c2d.

For light that just grazes the edge of the sun Θ = 1″.75 when γ = 1. Because of this small value it is necessary to observe stars whose light passes very close to the edge of the sun, and this can be done only during a total eclipse. The apparent positions of these stars during the eclipse are then compared to their positions when the sun is no longer in the field of view in order to measure the amount of bending. Unfortunately, such measurements are beset with a number of uncertainties. Thus the measurements made by Eddington and his co-workers had only 30% accuracy. The most recent such measurements were made during the solar eclipse of June 30, 1973, and yielded the value

(39)

The use of long-baseline and very-long-baseline interferometry, which is capable in principle of measuring angular separations and changes in angle as small as 3 × 10−4, has made possible much more accurate tests of the bending of light. These techniques have been used to observe a number of quasars such as 3C273 that pass very close to the sun in the course of a year. Beginning in 1970, these observations have yielded increasingly accurate determinations, and the most recent, in 1984, agrees with the general relativistic prediction to within 1%.

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## Gravity Waves

Pijush K. Kundu, ... David R. Dowling, in Fluid Mechanics (Sixth Edition), 2016

### 8.2 Linear Liquid-Surface Gravity Waves

Starting from the equations for ideal flow, this section develops the properties of small-slope, small-amplitude gravity waves on the free surface of a constant-density liquid layer of uniform depth H, which may be large or small compared to the wavelength λ. The limitation to waves with small slopes and amplitudes implies a/λ ≪ 1 and a/H ≪ 1, respectively. These two conditions allow the problem to be linearized. In this first assessment of wave motion, surface tension is neglected for simplicity; in water its effect is limited to wavelengths less than 5 to 10 centimeters, as discussed in Section 8.3. In addition, the air above the liquid is ignored, and the liquid’s motion is presumed to be irrotational and entirely caused by the surface waves.

स्रोत : www.sciencedirect.com

## The bending of light about corners of an obstacle is called

Bending of beam of light around corners of obstacled /slit is called diffraction

The bending of light about corners of an obstacle is called

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the bending of light by an Italian scientist Court criminal do you suppose they are travelling Travels this is the Sushil Knight Rises Octane to get now this is a dark place and this is the only opening from where the light rays can skip light travels in a straight line only this portion only this portion of the screen

should be bright right but it was not observed is observation was little different there the where the brightness was there was a little larger than the straight line path of the light so this is where this is the actual observation and actual brightness on the screen the larger area than the bending why it happens this also speaks about the wave nature of light light rays lie to so this phenomena this phenomena of bending of

bending of light rays at the converse is called squirt differential name given to this phenomena

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The bending of light about corners of an obstacle is called

13166821 03:31

The bending of the shoot of a plant in response to light is called:

28389216 02:42

While passing round the corner of an obstacle, the bending of light____with the increase of the wavelength of light [ Fill in the blank].

157409662 03:43

Between sound and light, _____ bends more while passing round the corner of an obstacle [Fill in the blank].

157409663 07:00

किसी अवरोध की ओर से प्रकाश का मुड़ना कहलाता है

517576930 01:27

During your study in a junior school you were told that light travels in a straight line. But now you know that light travels as a wave and it can bend around objects. In optical region light has a wavelength of about half a micrometre. If it encounters an obstacle of about this size, it may bend around it and can be seen on the other side. however, if the obstacle is much larger, light will not be able to bend to that extent and will not be seen on other side. This is a general property of waves and can be seen in sound waves too. the sound wave of our spech has a wavelength of about 50 cm-1m. if it meets an obstacle of the size of a few metres, it bends around it and reaches points behind the obstacle. but when it comes, across a larger obstacle of a few hundred metres, such as a hillock, most of it is reflected back and is heard as an echo. Q. What is diffraction of light ?

531857798 Text Solution

During your study in a junior school you were told that light travels in a straight line. But now you know that light travels as a wave and it can bend around objects.

In optical region light has a wavelength of about half a micrometre. If it encounters an obstacle of about this size, it may bend around it and can be seen on the other side. however, if the obstacle is much larger, light will not be able to bend to that extent and will not be seen on other side.

This is a general property of waves and can be seen in sound waves too. the sound wave of our spech has a wavelength of about 50 cm-1m. if it meets an obstacle of the size of a few metres, it bends around it and reaches points behind the obstacle. but when it comes, across a larger obstacle of a few hundred metres, such as a hillock, most of it is reflected back and is heard as an echo.

Q. Under what condition can you observe diffraction of light ?

531857802 Text Solution

During your study in a junior school you were told that light travels in a straight line. But now you know that light travels as a wave and it can bend around objects.

In optical region light has a wavelength of about half a micrometre. If it encounters an obstacle of about this size, it may bend around it and can be seen on the other side. however, if the obstacle is much larger, light will not be able to bend to that extent and will not be seen on other side.

This is a general property of waves and can be seen in sound waves too. the sound wave of our spech has a wavelength of about 50 cm-1m. if it meets an obstacle of the size of a few metres, it bends around it and reaches points behind the obstacle. but when it comes, across a larger obstacle of a few hundred metres, such as a hillock, most of it is reflected back and is heard as an echo.

Q. Why is diffraction so common is sound but not so common in light ?

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Mohammed 13 day ago

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