Specifically, fibers from the nasal half of the left eye and the temporal half of the right eye form the right optic tract; and the fibers from the nasal half of the right eye and the temporal half of the left form the left optic tract.
A Shifting Purpose. Early cell phones were just for talking. Gradually, features like voicemail were added, but the main purpose was talk. Eventually, cell phone manufacturers began to realize that they could integrate other technologies into their phone and expand its features.
The first cellular phone was invented and demonstrated in 1973 by Martin Cooper, an engineer and general manager for Motorola, who successfully developed a portable handset using cellular communications technology. Cooper made the first ever cellular phone call in April 1973 using the prototype Motorola Dyna-Tac.