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 concept of the cell phone actually began in the 1920's and was developed in the 1930's with police radios. Mobile phones were made in 1947, but the cell phone that we know â¦ today wasn't made until 1973. It was developed by Martin Cooper for Motorola and was only for government use. Public use of cell phones began in 1984.