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Reflector that has the shape of a paraboloid
A parabolic reflector is a reflective surface used to collect or project energy such as light, sound, or radio waves. Its shape is part of a circular
Parabolic_reflector
Type of electric lamp
A parabolic aluminized reflector lamp (PAR lamp or simply PAR) is a type of electric lamp that is widely used in commercial, residential, and transportation
Parabolic aluminized reflector
Parabolic_aluminized_reflector
Type of antenna
A parabolic antenna is an antenna that uses a parabolic reflector, a curved surface with the cross-sectional shape of a parabola, to direct the radio
Parabolic_antenna
Directional audio recording instrument
A parabolic microphone is a microphone that uses a parabolic reflector to collect and focus sound waves onto a transducer, in much the same way that a
Parabolic_microphone
Combination of concave and convex mirrors
primary mirror (or both). The classic Cassegrain configuration uses a parabolic reflector as the primary while the secondary mirror is hyperbolic. Modern variants
Cassegrain_reflector
Type of parabolic antenna with a convex secondary reflector
Cassegrain antenna is a parabolic antenna in which the feed antenna is mounted at or behind the surface of the concave main parabolic reflector dish and is aimed
Cassegrain_antenna
gain in a given direction. Common integrated reflector types are parabolic reflector, which focuses a beam signal into one point or directs a radiating
Reflector_(antenna)
Object detection system using radio waves
system already used the classic antenna setup of horn antenna with parabolic reflector and was presented to German military officials in practical tests
Radar
Use of mirrors or lenses to heat a fluid for electricity generation
than a parabolic reflector, thus capturing more of the available sunlight, and they are much cheaper than parabolic reflectors. Fresnel reflectors can be
Concentrated_solar_power
Parabolic-shaped speaker producing coherent plane waves
output from a speaker driver to a parabolic reflector aimed at the target audience, or by arraying drivers on a parabolic surface. The resulting beam of
Parabolic_loudspeaker
A parabolic torus reflector antenna is a quasi-parabolic antenna, where the defining parabola is not rotated around the main transmission axis, but around
Parabolic torus reflector antenna
Parabolic_torus_reflector_antenna
Plane curve: conic section
many important applications, from a parabolic antenna or parabolic microphone to automobile headlight reflectors and the design of ballistic missiles
Parabola
Topics referred to by the same term
technology: Parabolic antenna Parabolic microphone Parabolic reflector Parabolic trough - a type of solar thermal energy collector Parabolic flight - a way of achieving
Parabolic
Quadric surface with one axis of symmetry and no center of symmetry
of a circular paraboloid is widely used in astronomy for parabolic reflectors and parabolic antennas. The surface of a rotating liquid is also a circular
Paraboloid
Lensless stage lighting device
uses two reflectors. The primary reflector is a parabolic reflector and the secondary reflector is a spherical reflector. The parabolic reflector organizes
Beam_projector
Device that uses solar energy to heat food
car-headlights), concave mirrors are of parabolic shape. Spherical reflectors operate much like paraboloidal reflectors, such that the axis of symmetry is
Solar_cooker
Mirror with a curved reflecting surface
used in optical devices. The most common non-spherical type are parabolic reflectors, found in optical devices such as reflecting telescopes that need
Curved_mirror
Funnel-shaped waveguide radio device
segment of a parabolic reflector, and the focus of the reflector is at the apex of the horn, so the device is equivalent to a parabolic antenna fed off-axis
Horn_antenna
random surface errors. The equation was originally developed for parabolic reflector antennas, and later extended to phased arrays. The equation is named
Ruze's_equation
Device that transmits and receives radio waves
antenna may include components not connected to the transmitter, parabolic reflectors, horns, or parasitic elements, which serve to direct the radio waves
Antenna_(radio)
Device that emits light to illuminate performers
uses two reflectors. The primary reflector is a parabolic reflector and the secondary reflector is a spherical reflector. The parabolic reflector directs
Stage_lighting_instrument
German WWII ground-based tracking radar
Würzburg-Riese (giant) was based on the D model but used a much larger parabolic reflector to further improve resolution at the cost of no longer being mobile
Würzburg_radar
Photographic lighting device
A beauty dish is a photographic lighting device that uses a parabolic reflector to distribute light towards a focal point. The light created is between
Beauty_dish
Solar thermal energy
Asia. It uses a curved mirror, or an array of mirrors, acting as a parabolic reflector, which can reach temperatures of up to 3,000 degrees Celsius. The
Solar_furnace_of_Uzbekistan
Projection of light energy
or windows. To artificially produce a light beam, a lamp and a parabolic reflector is used in many lighting devices such as spotlights, car headlights
Light_beam
Type of parabolic reflector used in some radar systems
sometimes known as a constant height pattern, is a modified form of parabolic reflector used in some radar systems. It is shaped to send more radio energy
Cosecant_squared_antenna
Optical device for concentrating light
of material required for the reflector. This greatly reduces the system's cost since sagged-glass parabolic reflectors are typically very expensive.
Compact linear Fresnel reflector
Compact_linear_Fresnel_reflector
Intense focused beam lamp for improving visual detection
bright source (traditionally a carbon arc lamp) with a mirrored parabolic reflector to project a powerful beam of light of approximately parallel rays
Searchlight
Device that converts sound into an electrical signal
A parabolic microphone uses a parabolic reflector to collect and focus sound waves onto a microphone receiver, in much the same way that a parabolic antenna
Microphone
Physical transmission device
Communications intelligence Electronic warfare A parabolic antenna is an antenna that uses a parabolic reflector, a curved surface with the cross-sectional
Microwave_antenna
Spherically symmetric gradient-index lens
Luneburg lens antenna is comparable to a parabolic dish antenna, but uses the lens rather than a parabolic reflector as the main focusing element. As with
Luneburg_lens
Surface for directing light onto a subject
giving a relatively broad spread of light; parabolic, providing a tighter, parallel beam of light. The reflector factor is the ratio of the illumination
Reflector_(photography)
Aspect of a lens or reflector
points of an imperfect lens or parabolic reflector whether optical, electrostatic or electromagnetic. This includes parabolic antennas and lens-type reflective
Focal_cloud
Technology used in concentrated solar power stations
A parabolic trough collector (PTC) is a type of solar thermal collector that is straight in one dimension and curved as a parabola in the other two, lined
Parabolic_trough
Lighthouse
coal, and the first lighthouse in the world to be fitted with a parabolic reflector (though similar claims are made for Hutchinson's lighthouses in Liverpool)
Old_Hunstanton_Lighthouse
Type of reflecting telescope
The Newtonian telescope, also called the Newtonian reflector or just a Newtonian, is a type of reflecting telescope invented by the English scientist
Newtonian_telescope
Lighting system
prevent it from melting. The bulb is usually placed at the focus of a parabolic reflector to direct all the light in one direction. It would be impossible
Sulfur_lamp
Telecommunications performance metric
antenna efficiency, which applies to aperture antennas such as a parabolic reflector or phased array, or antenna/aperture illumination efficiency, which
Radiation_efficiency
Type of light fixture used in lighthouses
replaced. The lamp used a similar design to an Argand lamp, adding a parabolic reflector behind the lamp and a magnifying lens made from 4-inch-diameter (100 mm)
Lewis_lamp
Theoretical propulsion system capable of interstellar distances
(1978). A proposal to create an artificial black hole and using a parabolic reflector to reflect its Hawking radiation was discussed in 2009 by Louis Crane
Black_hole_starship
Telescope whose mirror is a reflective liquid
causes the surface of the liquid to assume a paraboloidal shape. This parabolic reflector can serve as the primary mirror of a reflecting telescope. The rotating
Liquid-mirror_telescope
Resort in Las Vegas, Nevada
that the hotel's reflective surface and concave design can act as a parabolic reflector that creates conditions of extremely high temperature at the pool
Vdara
Proposed radio telescope
and the reflector would be 350m in diameter. Robotic lift wires and an anchoring system would enable origami deployment of the parabolic reflector. A previous
Lunar_Crater_Radio_Telescope
Type of flashing long-distance beacon
weather. Historic models include the DCB-24, which used a single parabolic reflector; the DCB-224, a double-beamed version of the DCB-24; and the DCB-36
Aerobeacon
Type of directional antenna
intermediate between a plane reflective array antenna and a parabolic antenna. Corner reflector antennas are particularly suitable in applications where
Corner_reflector_antenna
Type of weapon that fires a concentrated beam of energy at its target
combustion chamber leading to two parabolic dishes pulse-detonated at roughly 44 Hz. This sound, magnified by the dish reflectors, caused vertigo and nausea
Directed-energy_weapon
Lamp mounted in the front of a vehicle
(filament or arc) is placed at or near the focus of a reflector, which may be parabolic or of non-parabolic complex shape. Fresnel and prism optics moulded
Headlamp
Navy missile target and guidance radar
feed horn, which is incident on the parabolic reflector, is still vertically polarized. The parabolic reflector serves as a vertically polarized focusing
AN/SPG-55
Device purported to be used by Archimedes to burn Roman ships
episode, Deep Space Observer (S1E3), about the Keck Observatory, whose reflector glass is based on the Archimedes' Mirror. The episode demonstrated the
Archimedes'_heat_ray
Portable hand-held electric light
smooth reflector, to improve the uniformity of the light beam emitted. Where multiple LEDs are used, each one may be put in its own parabolic reflector. Flashlights
Flashlight
Topics referred to by the same term
accessible by all, without subscription Offset Alpine Printing Off-axis parabolic reflector, a type of curved mirror used in optics and radio the Office of Atoms
OAP
Mountain pass and archaeological site in Colorado, USA
a two-million candlepower electric lamp with a 24-inch (610 mm) parabolic reflector. The beacon was removed in the late-1960s and is currently in storage
Rollins_Pass
Largest species of deer
antlers using a microphone found that the palmate antler acts as a parabolic reflector, amplifying sound at the moose's ear. The antlers of mature Alaskan
Moose
Acoustic amplifier
shaped to assist the projection, for example, being formed as a parabolic reflector. In the typical setting of a church building, the sounding board
Sounding_board
on the retina. The deep-sea ostracod Gigantocypris has eyes with parabolic reflectors. The compound eyes of long-bodied decapod crustaceans, such as shrimps
Animal_reflectors
photos. The viewfinder is slightly smaller to accommodate the large parabolic reflector. Unlike other cameras in the series, the flash sync terminals are
Kodak_Starflash
Naval continuous wave fire-control radar
surface-to-air missiles. The antenna is mechanically steered, uses a parabolic reflector, and operates at 8 to 12 GHz (X Band). The system is a component
AN/SPG-62
Telecommunication tower in Berlin-Wannsee, Germany
non-line-of-sight link to Torfhaus. To that end the tower was equipped with two Parabolic reflector antennas, each 18 metres (59 ft) in diameter, which were mounted
Fernmeldeturm_Berlin
to detect changes in position while the vehicle is in motion, a parabolic reflector, low-noise block converter, and control unit. They can use also shifted
Automatic-tracking satellite dish
Automatic-tracking_satellite_dish
Royal Navy radar system
used a lens made of metal tubes in place of the more traditional parabolic reflector, which made it look like a circular plate rather than the open framework
Type_984_radar
Type of parabolic antenna
vertical axis operates as an off-axis concave parabolic concave hyperbolic[clarification needed] Cassegrain reflector, while the horizontal axis operates as
Satellite_dish
Telescopes which utilize curved mirrors to form an image
early 1910s, is a specialized Cassegrain reflector which has two hyperbolic mirrors (instead of a parabolic primary). It is free of coma and spherical
Reflecting_telescope
Optical aberration
{LSA} \,.} Achromatic lens Hubble Space Telescope Maksutov telescope Parabolic reflector Ritchey–Chrétien telescope Schmidt corrector plate Soft focus Boudrioua
Spherical_aberration
Radio antenna which has greater performance in specific alignments
combination of a line feed with an enormous spherical reflector (as opposed to a more usual parabolic reflector), to achieve extremely high gains at specific
Directional_antenna
Antenna consisting of two rod-shaped conductors
elaborate directional antennas such as a horn antenna, parabolic reflector, or corner reflector. Engineers analyze vertical (or other monopole) antennas
Dipole_antenna
Mechanical apparatus used to send messages
by open fires and later candles, the Argand hollow wick lamp and parabolic reflector were introduced in the late 18th century. The source of light is
Semaphore
Skull projections found in deer
confirmed that the large flattened (palmate) antler behaves like a parabolic reflector. The diversification of antlers, body size and tusks has been strongly
Antler
rangefinder for the main armament, an antenna with a large cylindrical parabolic reflector and 12 dipoles was used. This set was designated Type 285 and had
Radar_in_World_War_II
British array of radio telescopes
(two fixed and one moveable, fully steerable 60 ft-diameter (18 m) parabolic reflectors operating simultaneously at 1407 MHz and 408 MHz) designed to perform
One-Mile_Telescope
Compact composite lens
headlamps, where they can shape the roughly parallel beam from the parabolic reflector to meet requirements for dipped and main-beam patterns, often both
Fresnel_lens
Type of microwave-frequency radio antenna
microwave-frequency parabolic antenna used in certain types of radar. The antenna consists of a cylindrical parabolic reflector consisting of sheet metal
Cheese_antenna
he defended a thesis for PhD on "Development and research of the parabolic reflector in order to improve the energy characteristics of a solar installation"
Murad_Ashurly
Greek mathematician and physicist (c. 287 – 212 BC)
Anthemius, despite skepticism, tried to reconstruct Archimedes' hypothetical reflector geometry. The purported device, sometimes called "Archimedes' heat ray"
Archimedes
Ceiling light fixture
iodide (HQI) Sodium vapor Stationary Reflector Ellipsoidal reflector Multifaceted reflector Parabolic aluminized reflector (PAR) Aviation obstruction Balanced-arm
Chandelier
Structure designed to emit light to aid navigation
by open fires and later candles, the Argand hollow wick lamp and parabolic reflector were introduced in the late 18th century. Whale oil was also used
Lighthouse
Beam focusing, typically horn-fed planar array of unit cells
be altered. A reflectarray focuses a beam in a similar way to a parabolic reflector (dish), but with a much thinner form factor. According to, in a reflectarray
Reflectarray_antenna
Component for guiding radio waves
each of the connected radio ports to the feed horn that faces the parabolic dish reflector (-40 dB means that only 0.01% of the transmitter's output power
Orthomode_transducer
Using object intended for one purpose in alternative way
, Quake-Catcher Network. Discarded or new consumer COTS surplus parabolic reflectors intended for use for C band satellite TV reception can be repurposed
Repurposing
American surface-to-air missile family
increasing the engagement envelope. The original MIM-23A missiles used a parabolic reflector, but the antenna directional focus was insufficient, when engaging
MIM-23_Hawk
British airborne radar series
produces 90 kW in the I band (formerly known as the X-band). The semi-parabolic reflector was made of lightweight foam with a wire mesh to make the system
Seaspray_(radar)
Overview of and topical guide to geometry
Deltahedron Surface normal 3-sphere, spheroid, ellipsoid Parabolic microphone Parabolic reflector Soddy's hexlet Sphericon Stereographic projection Stereometry
Outline_of_geometry
Branch of optics
photovoltaics. When compared to "traditional" imaging optics (such as parabolic reflectors or fresnel lenses), the main advantages of nonimaging optics for
Nonimaging_optics
of providing natural light to unlit locations. An arrangement of parabolic reflectors and optical fiber cables, transport natural sunlight to areas that
Remote_Skylights
make precision aspheric and parabolic speculum metal mirrors. In 1721 he showed the first parabolic Newtonian reflector to the Royal Society. It had
History_of_the_telescope
British WWII naval surface search radar
beam of the cheese antenna was not needed and it was replaced by a parabolic reflector. These were even larger than the original three foot designs of the
Type_271_radar
Lighthouse in Sintra, Portugal
with a new rotation platform, comprising sixteen Argand lamps with parabolic reflectors. However, by 1865, there were critics of the system, noting the inefficiency
Cabo_da_Roca_Lighthouse
Strategic SAM system
One of the three antennas, the P-16 on the far left, used a small parabolic reflector to send commands to the missiles in flight. Using time division multiplexing
S-75_Dvina
Mobile anti-aircraft gun
small vehicles. They were so small that it became practical to use a parabolic reflector to focus them, producing beams only a few degrees wide from an assembly
Radar, Anti-Aircraft No. 3 Mk. 7
Radar,_Anti-Aircraft_No._3_Mk._7
Vacuum tube
most successful variant of the SCR-602 model. Consisting of a 10-ft parabolic reflector antenna with a horizontal polarized dipole radiator at its focus
VT-158
Technology using sunlight for heat
as the Scheffler reflector. This technology was first developed by Wolfgang Scheffler in 1986. A Scheffler reflector is a parabolic dish that uses single
Solar_thermal_energy
Decorative electrical device
iodide (HQI) Sodium vapor Stationary Reflector Ellipsoidal reflector Multifaceted reflector Parabolic aluminized reflector (PAR) Aviation obstruction Balanced-arm
Plasma_globe
Device that collects heat
with tracking parabolic mirrors is offset by lower system costs. The sunlight concentrated at the focal line of a spherical reflector is collected using
Solar_thermal_collector
British radar systems in aircraft
electronics, Bernard Lovell was put in charge of examining the use of a parabolic dish to improve the directionality of the signal. The resulting beam was
Aircraft_interception_radar
US Cold War Early Warning Radar for ballistic missile defense
tracking of selected targets, and consisted of a very large steerable parabolic reflector under a large radome. These radars provided high-resolution angular
Ballistic Missile Early Warning System
Ballistic_Missile_Early_Warning_System
Metal rod intended to protect a structure from a lightning strike
design and application Emitter of ions for a lightning rod with a parabolic reflector, Manuel Domingo Varela, U.S. patent 6,069,314. Lightning-protector
Lightning_rod
Electromagnetic radiation with wavelengths from 1 m to 1 mm
1888, consisting of 23 cm dipole and spark gap at the focus of a parabolic reflector Jagadish Chandra Bose in 1894 was the first person to produce millimeter
Microwave
American astronomer and astronaut (1926–1993)
instruments ranging from the Uppsala 20/26-inch schmidt to the 74-inch parabolic reflector. Henize also engaged in studies of ultraviolet optical systems and
Karl_Gordon_Henize
Hypothetical travel between stars or planetary systems
propel a starship by creating an artificial black hole and using a parabolic reflector to reflect its Hawking radiation. Although beyond current technological
Interstellar_travel
Array of antennas creating a steerable beam
with a more desirable form factor than the conventional parabolic reflector or cassegrain reflector. Fixed phased arrays incorporate fixed phase shifters
Phased_array
detection. The AN/TPS-58 weighs 3,500 pounds and utilizes a truncated parabolic reflector (65 × 52 cm) antenna. The accuracy of the AN/TPS-58 is 50m with a
AN/TPS-58
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