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Reflection which reverses the direction of a wave, particle, or signal
In physics, backscatter (or backscattering) is the reflection of waves, particles, or signals back to the direction from which they came. It is usually
Backscatter
Optical phenomenon in photography
In photography, backscatter (also called near-camera reflection) is an optical phenomenon resulting in typically circular artifacts on an image, due to
Backscatter_(photography)
Topics referred to by the same term
Backscatter is the reflection of waves, particles or signals. The term may also refer to: Backscatter X-ray, a new type of imaging technology Backscatter
Backscatter_(disambiguation)
Advanced X-ray imaging technology
Backscatter X-ray is an advanced X-ray imaging technology. Traditional X-ray machines detect hard and soft materials by the variation in x-ray intensity
Backscatter_X-ray
Incorrectly automated bounce messages
Backscatter (also known as outscatter, misdirected bounces, blowback or collateral spam) is incorrectly automated bounce messages sent by mail servers
Backscatter_(email)
Scanning electron microscopy technique
Electron backscatter diffraction (EBSD) is a scanning electron microscopy (SEM) technique used to study the crystallographic structure of materials. EBSD
Electron backscatter diffraction
Electron_backscatter_diffraction
Scattering of a radiation wave as it travels through a complex medium
In physics, coherent backscattering is observed when coherent radiation (such as a laser beam) propagates through a medium which has a large number of
Coherent_backscattering
Ambient backscatter uses existing radio frequency signals, such as radio, television and mobile telephony, to transmit data without a battery or power
Ambient_backscatter
Device which detects objects in or around a person's body
wave scanners do not generate ionizing radiation. X-ray-based scanners Backscatter X-ray scanners use low dose radiation for detecting suspicious metallic
Full_body_scanner
Portrayal of sexual subject matter
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Pornography
Type of cyber-attack
These response packets are known as backscatter. If the attacker is spoofing source addresses randomly, the backscatter response packets from the victim
Denial-of-service_attack
Analytical technique to determine structure and composition of materials
Rutherford backscattering spectrometry (RBS) is an analytical technique used in materials science. Sometimes referred to as high-energy ion scattering
Rutherford backscattering spectrometry
Rutherford_backscattering_spectrometry
Strength of an object's radar echo
section (NRCS), also known as differential scattering coefficient or radar backscatter coefficient, denoted σ0 or σ0 ("sigma nought"), which is the average
Radar_cross_section
Type of electron microscope
Scintillator Backscattered Electron Detectors, the Backscattered-to-Secondary Electron Conversion Detector, and the Solid State Diode Detector. Backscattered electrons
Scanning_electron_microscope
Automated message from an email system
"returned" to the third party instead of the spammer. This is called backscatter. Had the library.example mail server known that the message would be
Bounce_message
Neutron backscattering is one of several inelastic neutron scattering techniques. Backscattering from monochromator and analyzer crystals is used to achieve
Neutron_backscattering
Optical effect
proposed for this observational phenomenon: shadow hiding and coherent backscatter. The phase angle is defined as the angle between the observer, the observed
Opposition_surge
Rewriting an email message sender address
supply the criteria should not make any bounce message classifiable as backscatter, although some people mistakenly think it should. Open relays and forwarders
Sender_Rewriting_Scheme
Long distance radar technology
using a chirp transmitter. The most common type of OTH radar, OTH-B (backscatter), uses skywave or "skip" propagation, in which shortwave radio waves
Over-the-horizon_radar
Nanoscale orientation mapping method
Kikuchi diffraction (TKD), also sometimes called transmission electron backscatter diffraction (t-EBSD), is a method for orientation mapping at the nanoscale
Transmission Kikuchi diffraction
Transmission_Kikuchi_diffraction
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
Backscattering_cross_section
Nerve sensors used in brain-computer interfaces
impossible to create a functional transmitter in the sensor itself. Thus backscatter communication, adopted from radio frequency identification (RFID) technologies
Neural_dust
Type of microscope with electrons as a source of illumination
the energy of the primary beam. Backscattered electrons can be used for both imaging and to form an electron backscatter diffraction (EBSD) image, the latter
Electron_microscope
Unsolicited messages sent by email
appears blank, when in fact it uses HTML code to download other files. Backscatter is a side-effect of email spam, viruses, and worms. It happens when email
Email_spam
US Air Force radar station in Oregon
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
Christmas Valley Air Force Station
Christmas_Valley_Air_Force_Station
Meteorological instrumentation
geophysical model function (GMF) which relates wind and backscatter. Over the ocean, the radar backscatter results from scattering from wind-generated capillary-gravity
Scatterometer
Quantitative study of the energy spectra of gamma-ray sources
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
Gamma_spectroscopy
crosslinking (for negative resists) come from electron forward scattering and backscattering. The forward scattering process is due to electron-electron interactions
Proximity effect (electron beam lithography)
Proximity_effect_(electron_beam_lithography)
Meteorological optical phenomenon
is because the atmospheric light scattering that makes them visible (backscattering) is larger for low angles to the horizon than most other angles. Anticrepuscular
Anticrepuscular_rays
Manufacturer of metal detectors and X-ray machines
its revenue during 2005–2007. Rapiscan manufactures a controversial backscatter X-ray system for screening airport passengers, the Rapiscan Secure 1000
Rapiscan_Systems
Atmospheric phenomenon
horizon during twilight, above the antisolar point. Like alpenglow, the backscatter of reddened sunlight also creates the Belt of Venus. Though unlike alpenglow
Belt_of_Venus
American weather satellite (2005–2025)
French/CNES-provided improved Argos Data Collection System (Argos DCS-2) The Solar Backscatter Ultraviolet Spectral radiometer (SBUV/2) The Advanced Microwave Sounding
NOAA-18
Atmospheric optical phenomenon
direction when uniformly sized water droplets in clouds refract and backscatter sunlight. The phenomenon can appear on any misty mountainside, cloud
Brocken_spectre
Proposed sixth-generation mobile telecommunications technology
objects, and equipment across a wide range of contexts. 6G will also use Backscatter Communication for Ambient IoT devices. "Recommendation ITU-R M.2160-0"
6G
Optical effect of interplanetary dust reflections
faintly bright spot in the night sky centered at the antisolar point. The backscatter of sunlight by interplanetary dust causes this optical phenomenon, being
Gegenschein
American actress and writer
Furukawa Episode: "The Sixth Man" 2006 Numb3rs Student #1 Episode: "Backscatter" 2007–2009 Damages Female Associate 2 episodes 2008 Law & Order Tina
Hettienne_Park
British materials scientist and engineer
research interests are in micromechanics, deformation, strain and electron backscatter diffraction (EBSD). In 2014 he was awarded the Silver Medal of the Institute
Ben_Britton
Scientific study of crystal structures
Kikuchi lines in an electron backscatter diffraction pattern of monocrystalline silicon, taken at 20 kV with a field-emission electron source
Crystallography
Reserved part of radio spectrum
Amateur radio frequency allocation is done by national telecommunication authorities. Globally, the International Telecommunication Union (ITU) oversees
Amateur radio frequency allocations
Amateur_radio_frequency_allocations
Imaging technique using radiation
are also used in airport security, where "body scanners" generally use backscatter X-ray. To create an image in conventional radiography, a beam of X-rays
Radiography
Electron Backscatter Diffraction software
open-source MATLAB package specifically designed for the analysis of electron backscatter diffraction (EBSD) data, which are widely used to analyse the crystallographic
MTEX
Small radar mapper on the Lunar Reconnaissance Orbiter
An example Mini-RF total radar backscatter image taken in the 12.6 cm band. It shows a fresh lunar impact crater with an ejecta blanket surrounding it
Mini-RF
Process of removing land mines
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
Demining
Science of measurement and description of features which affect maritime activities
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
Hydrographic_survey
Northwest Atlantic Ocean submarine canyon
Middleton, Tammie J.; Robb, James M. (2006). Sea Floor Topography and Backscatter Intensity of the Hudson Canyon Region Offshore of New York and New Jersey:
Hudson_Canyon
American x-ray equipment manufacturer
leading inventor/scientist for the company, including inventing the backscatter technology, which enabled the detection of plastic explosives, he also
American Science and Engineering
American_Science_and_Engineering
Goods inspection system
dose of radiation to potential stowaways. Dual-energy X-ray radiography Backscatter X-ray radiography Examples of neutron activation systems include: pulsed
Cargo_scanning
American computer scientist
research on wireless power (including WREL), backscatter communication (including WISP and Ambient Backscatter), and robotic manipulation. He received a
Joshua_R._Smith
Measurement for ionizing radiation
plate sources usually have a significant backscatter, whereas alpha plate sources usually have no backscatter. However alpha particles are easily attenuated
Counts_per_minute
Practice of photographing the recently deceased
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Post-mortem_photography
Anomaly in digital graphics or imagery
fringing Motion blur Near-camera reflection, visual artifacts caused by the backscatter of light by unfocused particles In microscopy, an artifact is an apparent
Visual_artifact
Partitioning of a seabed acoustic image into discrete physical entities or classes
multispectral multibeam backscatter. New methods of analyzing backscatter data, have increased its potential for seabed characterization. Backscatter data resolution
Acoustic seabed classification
Acoustic_seabed_classification
Mathematical model for turbulence
The transfer of energy from unresolved to resolved scales is called backscatter (and likewise the transfer of energy from resolved to unresolved scales
Large_eddy_simulation
Creating email spam or phishing messages with a forged sender identity or address
addresses are typically reliable, so automated bounce messages may generate backscatter. Although email spoofing is effective in forging the email address, the
Email_spoofing
Type of camera lens with long focal length
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Telephoto_lens
Narrow beam of electromagnetic radiation or charged particles
is sometimes delivered through the use of pencil beam scanning. In backscatter X-ray imaging a pencil beam of x-ray radiation is used to scan over an
Pencil_(optics)
Topics referred to by the same term
code Placeres Airport, an airport in Bella Unión, Uruguay, by IATA code Backscatter UV Spectrometer, a UV spectrometer instrument aboard the Explorer 55
BUV
35mm camera from Kodak
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Kodak_35
Scattering of light by tiny particles in a colloidal suspension
translucent layer re-emerges via a radial scattered path. That is, there is backscatter, the redirection of the light waves back out to the open air. Scattering
Tyndall_effect
Compact astronomical body
the outgoing section of the inner horizon, infalling radiation would backscatter off of the black hole's spacetime curvature and travel outward, building
Black_hole
Model used by a fashion designer to check the fit and look of clothing
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Fit_model
Small angle deflection of waves
lead to the scattering. Forward scatter is essentially the reverse of backscatter. Many different examples exist, and there are very large fields where
Forward_scatter
Non-destructive elemental analysis technique
elastic collisions, Rutherford backscattering, often repelling the proton at angles close to 180 degrees. The backscatter give information on the sample
Particle-induced X-ray emission
Particle-induced_X-ray_emission
Photography of wedding ceremonies
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Wedding_photography
Network traffic lacking a routable destination
packets often contain unsolicited commercial or network control messages, backscatters, port scans, and worm activities. Smaller devices such as DSL modems
Internet_background_noise
Application of radar which is used to create two-dimensional images
radar backscatter for that area on the ground (terrain return): brighter areas represent high backscatter, darker areas represents low backscatter. The
Imaging_radar
Type of naturally occurring asphalt
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Bitumen_of_Judea
Photograph captured without creating a posed appearance
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Candid_photography
Email authentication method
address specified in an E-mail message is valid. It is designed to reject backscatter, that is, bounce messages to forged return addresses. The basic idea
Bounce_Address_Tag_Validation
Metal degradation processes
amplitude-based backscatter, velocity ratio, creeping waves/time-of-flight measurement, pitch-catch mode shear wave velocity, advanced ultrasonic backscatter techniques
Hydrogen_damage
Art and practice of creating images by recording light
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Photography
Inelastic scattering of photons by matter
Schematic of a dispersive Raman spectroscopy setup in a 180° backscattering arrangement.
Raman_scattering
Scottish physicist
Strathclyde. She works on scanning electron microscopy, including Electron backscatter diffraction (EBSD), diffraction contrast and cathodoluminescence imaging
Carol_Trager-Cowan
British photography magazine
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Amateur_Photographer
Optical component which splits light into several beams
convention for θm: plus (positive) if θm = θi describes the case of backscatter; minus (negative) if it describes specular reflection. Note that the
Diffraction_grating
neutron scattering Triple-axis spectrometer Time-of-flight spectrometer Backscattering spectrometer Spin-echo spectrometer Other applications Neutron tomography
Prompt gamma neutron activation analysis
Prompt_gamma_neutron_activation_analysis
Wi-fi using passive reflection
device constantly searches for a signal. The technique communicates via backscattering, reflecting incoming radio waves sent from a separate device. The technique
Passive_Wi-Fi
Optoelectronic instrument
extracts, from the same end of the fiber, light that is scattered (Rayleigh backscatter) or reflected back from points along the fiber. The scattered or reflected
Optical time-domain reflectometer
Optical_time-domain_reflectometer
Failure of a lens to focus all colors on the same point
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Chromatic_aberration
Pictures encoded as binary data
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Digital_image
Genre of astrophotography capturing the image of eclipses
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Eclipse_photography
Body screening device
of full body scanner used for body imaging; a competing technology is backscatter X-ray. Millimeter wave scanners come in two varieties: active and passive
Millimeter_wave_scanner
1968 Stockholm company
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Profoto
to listen to weaker and more distant stations. Radio portal Ambient backscatter Antique radio Battery eliminator Crystal radio Human-powered equipment
Batteryless_radio
United States federal government agency
emitted by backscatter X-rays, and there are fears that people will be exposed to a "dangerous level of radiation if they get backscattered too often"
Transportation Security Administration
Transportation_Security_Administration
"Inactive Accounts in Zoho Mail". Zoho. Retrieved December 27, 2024. "Backscatter". FastMail. "Verify your account - Google Account Help". "Why mailfence
Comparison of webmail providers
Comparison_of_webmail_providers
Image created by light falling on a light-sensitive surface
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Photograph
Deformation mechanism in steel
surface in a bearing inner ring; c) A higher-magnification image using backscattered electrons (BSE) of the area emphasized in b), displaying the characteristic
White_etching_cracks
Form of photography emphasizing simplicity
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Minimalist_photography
Distortion of an object in photography
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Perspective_distortion
San Antonio–class amphibious transport dock
not in use. The anchor and anchor pocket are shaped to minimize radar backscatter. On 17 December 1996, the U.S. Navy awarded a contract to an industrial
USS_San_Antonio
Urgent removal of people from an area of imminent or ongoing threat
equipment. Most of them are wireless devices such as IDs scanner, beacons or backscatter system. The new techniques are for example based on a communication protocol
Emergency_evacuation
American actor, singer, and stage director (born 1982)
SECONDS (TV)". The Paley Center for Media. Retrieved June 12, 2025. "Backscatter", Numb3rs, IMDb, May 5, 2006, retrieved June 12, 2025 "return of jezebel
Michael_Arden
Publishing or transfer of photos online
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Image_sharing
Type of camera
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Twin-lens_reflex_camera
Non-digital photography that uses film or chemical emulsions
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Analog_photography
Automated photography device
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Remote_camera
Photography genre
mm equivalent focal length Abbreviations list Angle of view Aperture Backscatter Black and white Chromatic aberration Circle of confusion Clipping Color
Fire_photography
American weather satellite (2009–2025)
(TED) and MEPED (Medium Energy Proton and Electron Detector). The Solar Backscatter Ultraviolet Spectral Radiometer (SBUV/2) was designed for a two-year
NOAA-19
Loss of plasticity in ferritic stainless steel
fields of intragranular slip bands in ferrite by high-resolution electron backscatter diffraction". Acta Materialia. 239 118284. Bibcode:2022AcMat.23918284K
475_°C_embrittlement
BACKSCATTER
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Boy/Male
American, Australian, Hebrew
The Lord is Salvation
Girl/Female
Indian
Good Happenings
Girl/Female
Tamil
Sanchana | ஸஂசாநாÂ
Gathering of good habits
Girl/Female
Hindu
Shore, Musical instrument, Goddess of wealth
Boy/Male
Indian
Majesty
Girl/Female
Tamil
Jiya Ushas | ஜீயா உஷாஸÂ
Sweet heart
Boy/Male
Hindu
Moreshwar or mayureshwar is one of ashthavinayaks (Lord Ganapati), Elephant headed God
Boy/Male
Hindu, Indian, Marathi
Warrior of the Guru
Surname or Lastname
English
English : occupational name, a variant of Penn 1, with the agent suffix -er.North German (including Lower Rhineland) : variant of Pfänner, from Pfann ‘pan’; according to Bahlow, a name denoting the owner of a salt-boiling pan.German : habitational name from Penna near Leipzig.Eastern German : in some cases a topographic name (of Salzburg emigrants) in East Prussia, equivalent of Baintner, Paintner (see Bainter), from Middle High German biunte ‘separate part of land or enclosure belonging to a village’.
Girl/Female
American, British, English
Hill; Variant of Irish; Sanskrit Tara
BACKSCATTER
BACKSCATTER
BACKSCATTER
BACKSCATTER
BACKSCATTER