A retroreflector (sometimes called a retroflector or cataphote) is a device or surface that reflects radiation (usually light) back to its source with...

reflected back to Earth by the Moon's surface or by one of several retroreflectors installed on the Moon. Three were placed by the United States' Apollo...

Retroreflectors are devices which reflect light back to its source. Six were left at six sites on the Moon by three crews of the Apollo program, two by...

The Laser Ranging Retroreflector (LRRR) is the first ever deployable lunar laser ranging experiment. It was carried on Apollo 11 as part of the Early Apollo...

came. This configuration is similar to a cat's eye retroreflector. However a cat's eye retroreflector needs a refractive index of around 2, while water...

Measuring tape Plane table Pole (surveying) Prism (surveying) (corner cube retroreflector) Prismatic compass (angle measurement) Ramsden surveying instruments...

astronauts deployed a retroreflector on February 5, 1971, and McDonald Observatory detected it the same day. The Apollo 15 retroreflector was deployed on July...

recorded. The presence of retroreflectors (mirrors used as targets for Earth-based tracking lasers) from the Laser Ranging Retroreflector Experiment (LRRR) is...

of flight of ultrashort pulses of light to satellites equipped with retroreflectors. This provides instantaneous range measurements of millimeter level...

eyes act as a strong retroreflector, sometimes seen at night when walking in wildlands with a flashlight. A simple retroreflector can be made by placing...

Passive Seismic Experiment Package used to measure moonquakes and a retroreflector array used for the lunar laser ranging experiment. Then Armstrong walked...

and some other animals. Lying immediately behind the retina, it is a retroreflector. It reflects visible light back through the retina, increasing the light...

LRRR may refer to: Laser Ranging Retroreflector, for Lunar laser ranging Lrrr, a character in the TV series Futurama LRR (disambiguation) This disambiguation...

mathematics (STEM), and landing its magnetometer, time capsule, and laser retroreflector on the Moon. The lander's gyroscopes failed on 11 April 2019 causing...

A corner reflector is a retroreflector consisting of three mutually perpendicular, intersecting flat surfaces, which reflects waves directly towards the...

provided by numerous manufacturers for various applications. As with any retroreflector, sheeting glows brightly when there is a small angle between the observer's...

PrOP odometer/penetrometer, a RV-2N radiation detector, and a TL laser retroreflector. An urban legend was spread among the Soviet Union that the Lunokhod...

Orbitography and Radiopositioning Integrated by Satellite (DORIS), Laser Retroreflector Array (LRA), and ARGOS data collection system. ISRO is responsible for...

A safety reflector is a retroreflector intended for pedestrians, runners, motorized and non-motorized vehicles. A safety reflector is similar to reflective...

Reflector, a device that causes reflection (for example, a mirror or a retroreflector) Reflector (photography), used to control lighting contrast Reflecting...

Reticle – Aim markings in optical devices, e.g. crosshairs Radio plate Retroreflector – Device to reflect radiation back to its source Scaphe – Sundial said...

back by a tiny NASA retroreflector on board the Vikram lander. The purpose of the experiment was to determine the retroreflector's surface location from...

eliminates the need for an assistant staff member, as the operator holds the retroreflector and controls the total station from the observed point. In practice...

closely. It is usually made of brightly colored plastic, and ends with a retroreflector. French law allows for bicycle safety wings up to 40 centimetres. Bicycle-friendly...

curve fitting PRISM (reactor), a small nuclear power plant design A retroreflector, used in surveying Prism Rail, a British passenger rail company Prism...

retroreflector for precise laser ranging. SLR was used for precise orbit determination and retroreflector research. SAGE III Spherical retroreflector...

Figure 5-10. Lunar laser ranging experiment. (left) This retroreflector was left on the Moon by astronauts on the Apollo 11 mission. (right) Astronomers...

considerations, but as the stations' lunar laser ranging corner-cube retroreflector arrays are passive instruments, they are still being used. Apollo 17...

sealed beam Rear position lights Reversing lights Safety reflector retroreflector Stop lights Turn signals trafficators Display Decorative Aroma lamp...

sealed beam Rear position lights Reversing lights Safety reflector retroreflector Stop lights Turn signals trafficators Display Decorative Aroma lamp...