Answer :
Final answer:
Runway Visual Range (RVR) is an aviation term that denotes the distance a pilot can see runway markings or lights. It is measured by transmissometers mounted on 14' towers along the runway. These devices measure RVR by sending and receiving light beams, and are key for safe takeoff and landing in low visibility conditions.
Explanation:
Runway Visual Range (RVR) is a term used in aviation to describe the distance at which a pilot can see the runway's surface marking or the lights delineating the runway or identifying its center line.
This range is measured by devices known as transmissometers, which are typically mounted on 14-foot towers along the runway.
The transmissometers send and receive light beams.
When the visibility is lower due to fog or other weather conditions, less light is received by the transmissometer, indicating a lower RVR. The RVR measurement is crucial to ensure safe takeoff and landing during low visibility conditions.
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