diffraction

When a wave-train passes an obstacle secondary waves are set up that interfere with the primary wave and give rise to bands of constructive and destructive interference. Around a point source of light, in consequence, is a series of concentric light and dark bands (coloured bands with white light), a diffraction pattern.

diffraction

Type: Term Pronunciation: di-frak′shŭn Definitions: 1. Deflection of the rays of light from a straight line in passing by the edge of an opaque body or in passing an obstacle of about the size of the wavelength of the light.
Found on http://www.medilexicon.com/medicaldictionary.php?t=24761

Diffraction

The phenomenon occurring when water waves are propagated into a sheltered region formed by a BREAKWATER or similar barrier that interrupts a portion of the otherwise regular train of waves, resulting in the multi-directional spreading of the waves.
Found on http://www.ecy.wa.gov/programs/sea/swces/products/glossary.htm

diffraction

[n] - when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands
Found on http://www.webdictionary.co.uk/definition.php?query=diffraction

Diffraction

The breaking up of a sound wave caused by some type of mechanical interference such as a cabinet edge, grill frame, or other similar object.
Found on http://www.testing1212.co.uk/a.htm

Diffraction

Diffraction is a wave phenomenon - i.e. all types of wave can diffract. Diffraction means the bending of wave (change in direction) and it occurs whenever a wave passes near to an obstacle. Longer wavelength waves diffract through a greater angle than shorter wavelength waves. Do not confuse diffraction with refraction
Found on http://www.users.zetnet.co.uk/computing/MainPage/SecDepts/Physics/Resources

Diffraction

The spreading of waves passing through an opening or around a barrier. See also: Diffraction Grating, Refraction, Scattering, Wave.
Found on http://www.diracdelta.co.uk/science/source/d/i/diffraction/source.html

diffraction

diffract. Compare with effusion. The ability of a wave to bend around the edges of obstacles or holes. The effect is most noticeable when the obstacle or hole is comparable to the size of the wavelength.
Found on http://antoine.frostburg.edu/chem/senese/101/glossary/d.shtml

diffraction

The deviation in the path of a wave that encounters the edge of an obstacle
Found on http://www.fisicx.com/quickreference/science/glossary.html

Diffraction

When light is obstructed by an object and the wave front is changed, interference occurs between components of the altered wave front. The pattern formed by interference is called the diffraction pattern. Many components are designed to yield very specific diffraction effects (diffractive optics, gratings). Other components attempt to counteract th...
Found on http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl

Diffraction

Dif·frac'tion noun [ Confer French diffraction .] (Opt.) The deflection and decomposition of light in passing by the edges of opaque bodies or through narrow slits, causing the appearance of parallel bands or fringes of prismatic colors, as by the action of a grating of fine lines or bars. ...
Found on http://www.encyclo.co.uk/webster/D/64

diffraction

When a wave train passes an obstacle secondary waves are set up that interfere with the primary wave and give rise to bands of constructive and destructive interference. Around a point source of light, in consequence, is a series of concentric light and dark bands (coloured bands with white light), a diffraction pattern. ... (18 Nov 1997) ...
Found on http://www.mondofacto.com/facts/dictionary?diffraction

diffraction

noun when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands
Found on http://wordnetweb.princeton.edu/perl/webwn?s=diffraction

diffraction

(dĭ-frak´shәn) the bending or breaking up of a ray of light into its component parts.
Found on http://www.encyclo.co.uk/local/21001

Diffraction

• (n.) The deflection and decomposition of light in passing by the edges of opaque bodies or through narrow slits, causing the appearance of parallel bands or fringes of prismatic colors, as by the action of a grating of fine lines or bars.
Found on http://thinkexist.com/dictionary/meaning/diffraction/

diffraction

the spreading of waves around obstacles. Diffraction takes place with sound; with electromagnetic radiation, such as light, X-rays, and gamma rays; ... [16 related articles]
Found on http://www.britannica.com/eb/a-z/d/47

Diffraction

The frequency-dependent ability of sound waves to “bend” over or around a partial height barrier such as a furniture panel, which results in an effective “acoustical shadow” only at high frequencies
Found on http://www.armstrong.com/commceilingsna/article22542.html

Diffraction

Periodic scattering of moving objects when they collide with an orderly pattern of fixed objects. Diffraction always follows Bragg's Law {n*Wavelength=2*Spacing of fixed objects*sin(angle of scattering)}. This periodic scattering is useful in determining the spacing of the fixed objects since all other variables in the equation are know. In Electro...
Found on http://www.unl.edu/CMRAcfem/glossary.htm

DIFFRACTION

The result of light waves interfering with other after passing through a narrow aperture, causing them to bend or spread.
Found on http://www.weather.com/glossary/d.html

diffraction

a process in which an incident wave, which propagates in a medium and encounters one or more obstacles, possibly limiting openings gives rise in this medium to another wave not interpretable by geometrical optics, called a diffracted wave
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=705-04-44

diffraction

the phenomenon whereby the propagation of a wave differs from that predicted by geometric optics due to the influence on that wave of an opening, obstruction or inhomogeneity in the medium
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=731-03-34

diffraction

phenomenon by which a sound wave is changed in direction by an obstacle or other heterogeneity in the medium
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=801-23-25

diffraction

deviation of the direction of propagation of a radiation, determined by the wave nature of radiation, and occurring when the radiation passes the edge of an obstacle
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=845-01-13

diffraction

The spreading or bending of waves as they pass round the edge of an obstacle or through an opening whose size is about that of the light's wavelength. The disturbed waves then interfere to produce ripple-patterns (see interference). Diffraction is a property that distinguishes between wavelike and p...
Found on http://www.daviddarling.info/encyclopedia/D/diffraction.html

diffraction

diffraction, bending of waves around the edge of an obstacle. When light strikes an opaque body, for instance, a shadow forms on the side of the body that is shielded from the light source. Ordinarily light travels in straight lines through a uniform, transparent medium, but those light waves that j...