Reflection which reverses the direction of a wave, particle, or signal
For other uses, see Backscatter (disambiguation).
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Backscatter in photography, showing a Brocken spectre within the rings of a glory
In physics, backscatter (or backscattering) is the reflection of waves, particles, or signals back to the direction from which they came. It is usually a diffuse reflection due to scattering, as opposed to specular reflection as from a mirror, although specular backscattering can occur at normal incidence with a surface. Backscattering has important applications in astronomy, photography, and medical ultrasonography. The opposite effect is forward scatter, e.g. when a translucent material like a cloud diffuses sunlight, giving soft light.
In physics, backscatter (or backscattering) is the reflection of waves, particles, or signals back to the direction from which they came. It is usually...
Electron backscatter diffraction (EBSD) is a scanning electron microscopy (SEM) technique used to study the crystallographic structure of materials. EBSD...
Ambient backscatter uses existing radio frequency signals, such as radio, television and mobile telephony, to transmit data without a battery or power...
Rutherford backscattering spectrometry (RBS) is an analytical technique used in materials science. Sometimes referred to as high-energy ion scattering...
wave scanners do not generate ionizing radiation. X-ray-based scanners Backscatter X-ray scanners use low dose radiation for detecting suspicious metallic...
proposed for this observational phenomenon: shadow hiding and coherent backscatter. The phase angle is defined as the angle between the observer, the observed...
In physics, coherent backscattering is observed when coherent radiation (such as a laser beam) propagates through a medium which has a large number of...
Backscattering cross section is a property of an object that determines what proportion of incident wave energy is scattered from the object, back in the...
Neutron backscattering is one of several inelastic neutron scattering techniques. Backscattering from monochromator and analyzer crystals is used to achieve...
cross-section (NRCS), also known as differential scattering coefficient or radar backscatter coefficient, denoted σ0 or σ0 ("sigma nought"), which is the average...
Kikuchi Diffraction (TKD), also sometimes called transmission-electron backscatter diffraction (t-EBSD), is a method for orientation mapping at the nanoscale...
contrast produced and its directionality. Backscattered electrons can also be used to form an electron backscatter diffraction (EBSD) image that can be used...
plate sources usually have a significant backscatter, whereas alpha plate sources usually have no backscatter. However alpha particles are easily attenuated...
its revenue during 2005–2007. Rapiscan manufactures a controversial backscatter X-ray system for screening airport passengers, the Rapiscan Secure 1000...
engineers in the early 1970s who were developing an over the horizon backscatter radar (OTH-B) system. The system was based on a frequency modulation/continuous...
first peak left of the Compton edge), the so-called backscatter peak. The detailed shape of backscatter peak structure is influenced by many factors, such...
position of origin for each of the backscatter amplitudes in the output data set. Those positions are based on the backscatter measurements themselves and not...
plate Terminology 35 mm equivalent focal length Angle of view Aperture Backscatter Black-and-white Chromatic aberration Circle of confusion Color balance...
flowing along with air molecules near where the beam exits reflect, or backscatter, the light back into a detector, where it is measured relative to the...
off a mine, and it can only detect mines near the surface. In X-ray backscatter, an area is irradiated with X-rays (photons with wavelengths between...
is because the atmospheric light scattering that makes them visible (backscattering) is larger for low angles to the horizon than most other angles. Anticrepuscular...
Amateur radio frequency allocation is done by national telecommunication authorities. Globally, the International Telecommunication Union (ITU) oversees...
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