It is able to hold a good polish and so is sometimes used in light reflectors and mirrors.

They are commonly used as radar reflectors to make otherwise difficult-to-detect objects easier to detect.

Silver is seldom used as the reflector in telescope mirrors where aluminum is generally preferred being cheaper and less susceptible to tarnishing and corrosion Silver is the reflective coating of choice for solar reflectors.

Segways used on public roads must be equipped with front and rear lighting, reflectors, a bell, and an insurance plate.

As the systems generally used long-range radars to find and track the incoming warheads, the simplest solution was to add radar reflectors and other decoys to the launch.

* Another reason for using the Cassegrain design is to increase the focal length of the antenna, to improve the field of view Parabolic reflectors used in dish antennas have a large curvature and short focal length, to locate the focal point near the mouth of the dish, to reduce the length of the supports required to hold the feed structure or secondary reflector.

Radar corner reflectors made of metal are used to reflect radio waves from radar sets.

Optical corner reflectors, called corner cubes, made of three-sided glass prisms, are used in surveying and laser rangefinding.

Marine radar uses X-band microwaves with wavelengths of 2. 5-3. 75 cm, so small reflectors less than 30 cm across are used.

Arrays of tiny corner reflectors are used in automobile and bicycle tail lights.

In some cases, horizontal skylights are used with reflectors to increase the intensity of solar radiation ( and harsh glare ), depending on the roof angle of incidence.

It is the shape of the parabolic reflectors used in mirrors, antenna dishes, and the like ; and is also the shape of the surface of a rotating liquid, a principle used in liquid mirror telescopes and in making solid telescope mirrors ( see Rotating furnace ).

The presence of reflectors on the Moon has been used to rebut claims that the Apollo landings were faked.

It is widely used in solar panel substrates, antenna reflectors and yokes of spacecraft.

Parabolic reflectors are used to collect energy from a distant source ( for example sound waves or incoming star light ) and bring it to a common focal point, thus correcting spherical aberration found in simpler spherical reflectors.

Since the principles of reflection are reversible, parabolic reflectors can also be used to project energy of a source at its focus outward in a parallel beam, used in devices such as spotlights and car headlights.

Because many types of energy can be reflected in this way, parabolic reflectors can be used to collect and concentrate energy entering the reflector at a particular angle.

Archimedes in the third century BC studied paraboloids as part of his study of hydrostatic equilibrium, and it has been claimed that he used reflectors to set the Roman fleet alight during the Siege of Syracuse.

The same technique is used in rotating furnaces to make solid reflectors.

In order to achieve narrow beamwidths, the parabolic reflector must be much larger than the wavelength of the radio waves used, so parabolic antennas are used in the high frequency part of the radio spectrum, at UHF and microwave ( SHF ) frequencies, at which the wavelengths are small enough that conveniently-sized reflectors can be used.

:* Night Cache: These multi-stage caches are designed to be found at night and generally involve following a series of reflectors with a flashlight to the final cache location.

Neutron reflectors, compressing the fissile core via implosion, fusion boosting, and " tamping ", which slows the expansion of the fissioning core with inertia, allow nuclear weapon designs that use less than what would be one bare-sphere critical mass at normal density.

Corner reflectors are placed on the vessel's masts at a height of at least 4. 6 meters above sea level.

Jansky's antenna was an array of dipoles and reflectors designed to receive short wave radio signals at a frequency of 20. 5 MHz ( wavelength about 14. 6 metres ).

Also, as frequencies increase, parabolic reflectors become more efficient at focusing them.

The reflectors at the ends of the cavity are dielectric mirrors made from alternating high and low refractive index quarter-wave thick multilayer.

Hertz placed dipole antennas at the focal point of parabolic reflectors for both transmitting and receiving.

Railways in the United States are adding reflectors to the side of each train car to help prevent accidents at level crossings.

Most large research reflectors operate at different focal planes, depending on the type and size of the instrument being used.

In areas of the United States without winter snow cover, blue reflectors embedded in the street are used to allow rapid identification of hydrants at night.

Budget models may be made of steel or aluminum and incorporate reflectors for safer riding on streets at night.

The lamps and reflectors were replaced in 1843, with the original equipment being used in the lighthouse at Cape Bonavista, Newfoundland where they are currently on display.

Experience with the optics, mechanics and control of radiotelescopes led to involvement with solar thermophotovoltaic energy at the time of the energy crisis, including the fabrication of low-cost solid and perforated paraboloidal reflectors by hydraulic inflation.

Instead of housing orange reflectors / lights at the front sides and red reflectors / lights at the rear sides, there are non-lit orange reflectors at all four locations.

Most reflectors on the network have 10 channels ( 0-9 ) with channel 0 being the main channel.

Items legally required in some jurisdictions, or voluntarily adopted for safety reasons, include bicycle helmets, generator or battery operated lights, reflectors, and audible signalling devices such as a bell or horn.

In Niven's obscure story The Color of Sunfire it has entire continents covered with Slaver sunflowers ( bred as defense for Thrint manors, they focus sunlight using silver leaves as parabolic reflectors ), giving it an appearance from orbit of having " silver eyes ".

Parabolic reflectors resolve this, allowing incoming parallel rays ( for example, light from a distant star ) to be focused to a small spot ; almost an ideal point.

Parabolic reflectors are not suitable for imaging nearby objects because the light rays are not parallel.

Corner reflectors on boats, for example, make them more detectable to avoid collision or during a rescue.

He continued his work as a telescope maker and achieved an international reputation for their manufacture, profitably selling over 60 completed reflectors to British and Continental astronomers.

NASA has put several optical corner reflectors made of quartz, known as the Lunar Laser Ranging Experiment, on the Moon for use in laser time-of-flight measurement to measure the Moon ’ s orbit more precisely than was possible before.

Tower blocks with balconies are often accidental corner reflectors for sound and return a distinctive echo to an observer making a sharp noise, such as a hand clap, nearby.

APOLLO is now using Lunokhod 1's reflector for experiments, as they discovered, to their surprise, that it was returning much more light than other reflectors on the Moon.

Infrastructure sensors are indestructible ( such as in-road reflectors ) devices that are installed or embedded in the road or surrounding the road ( e. g., on buildings, posts, and signs ), as required, and may be manually disseminated during preventive road construction maintenance or by sensor injection machinery for rapid deployment.

Shell casings and magazine clips can also be found, along with JATO tanks and large crosses, constructed of wood with orange reflectors for visibility from the air.

Shell casings and magazine clips can also be found, along with JATO tanks and large cross targets, constructed of wood with orange reflectors for visibility from the air.

Parabolic reflectors are popular for use in creating optical illusions.

Parabolic reflectors are also a popular alternative for increasing wireless signal strength.

As with the other Cassegrain-configuration reflectors, the RCT has a very short optical tube assembly and compact design for a given focal length.

The idea of using parabolic reflectors for radio antennas was taken from optics, where the power of a parabolic mirror to focus light into a beam has been known since classical antiquity.

Originally developed for use in the mirrors and mirror mounts of astronomical telescopes, LAS-glass-ceramics have become known and entered the domestic market through its use in glass-ceramic cooktops, as well as cookware and bakeware or as high performance reflectors for digital projectors.

The targets, usually towed behind B-45A tow ships, were 9 ' x45 ' target sleeves, with two radar reflectors attached for the interceptor fire control systems to lock onto.