The metal patch was first discovered in 1991 on the atoll, according to TIGHAR, and was placed on Earhart's plane during a stop in Miami in 1937. The Miami Patch was an expedient field repair, Ric Gillespie, executive director of TIGHAR, told Discovery News.
Synthetic vision system. A modern synthetic vision system produced by Honeywell. A synthetic vision system (SVS) is a computer-mediated reality system for aerial vehicles, that uses 3D to provide pilots with clear and intuitive means of understanding their flying environment.
Foveal vision orcentral vision is vision that arises from stimuli falling on the macula lutea of the retina. Schematic diagram of the human eye, with the fovea at the bottom. The foveal system of the human eye is the only part of the retina that permits 100% visual acuity. The line-of-sight is a virtual line connecting the fovea with a fixation point in the outside world. The discovery of the line-of-sight is attributed to Leonardo DaVinci.