Change in the directions and intensities of a group of waves after passing by an obstacle or through an aperture whose size is approximately the same as the wavelength of the waves
The aperture, then, starts to act like a new source of waves.
Subatomic particles which have dual behaviour ( particle-wave ), like electrons or photons, can also suffer diffraction.
THE BENDING OF WAVES
I am assuming you mean diffraction. A diffraction is a phenomenon that occurs when a wave passes through two slits and a pattern is observed a certain distance away from the slits. Because waves are unlike particles, when they go through a slit, they tend to spread out instead of going straight. When there are two slits and a wave is allowed to travel through it, it will "diffract" and display a pattern on an observatory wall.
This diffraction is one of the main factors that proved Einstein wrong when he said light behaves like a particle.
Waves have a tendency to spread as they propagate through a medium. As a result, when a wave encounters an obstacle, it spreads into the region behind the obstacle. This phenomenon is called diffraction. The amount of diffraction depends on the wavelength: The longer the wavelength, the greater is the spreading of the wave. Significant diffraction into the region behind the obstacle occurs only if the size of the obstacle is smaller than the wavelength. For example, a person sitting behind a pillar in an auditorium hears the performer because the long wavelength sound waves spread behind the pillar. But the view of the performance is obstructed because the wavelength of light is much smaller than the pillar, and, therefore, the light does not diffract into the region behind the pillar.
Objects that are smaller than the wavelength do not produce a significant reflection. This too is due to diffraction. The wave simply diffracts around the small obstacle, much as flowing water spreads around a small stick.
Both light waves and sound waves can be focused with curved reflectors and lenses. There is, however, a limit to the size of the focused spot. It can be shown that the diameter of the focused spot cannot be smaller than about λ/2. These properties of waves have important consequences in the process of hearing and seeing.
Diffraction is the bending of waves around an obstacle under specific circumstances.
"Diffraction" does.
Diffraction.
Diffraction example: you run or bounce into somthing and, the wave goes around the object. This is called diffraction.
The idea is that, due to the small wavelength of X-rays, atoms can serve as a diffraction grid - causing diffraction patterns. (If you don't know about diffraction, I suggest you search in the questions for "diffraction", or ask a separate question for diffraction.) Crystals are good for this, because of their regular structure.
Diffraction can be observed in any medium.
fresnel diffraction and fraunhoffer diffractions
diffraction
i couldn't make a sentence with diffraction! :)
No diffraction grating is not used in polarization.
It is called diffraction.
X-ray diffraction is based on photons which are massless particles; neutron diffraction is based neutrons which possess mass and about 1000 heavier than electrons.