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.
History of the Smartphone. Alexander Graham Bell is the inventor of the telephone. In 1878 he made the first phone call. Telephones have not only come a long way, but may one day be completely obsolete. Motorola introduced some of the first cellphones to the public during the 1980s. These cellphones were completely unlike the cell phones of today since they were not at all compact nor by any means cost effective. Some of these cellphones cost as much as $4,000, and weighed over 2 pounds! The first smartphone was developed by IBM and BellSouth, which came out to the public in 1993.