2 сент 1956 г. - Transatlantic telephone cable
Описание:
A transatlantic telecommunications cable is a submarine communications cable connecting one side of the Atlantic Ocean to the other. In the 19th and early 20th centuries each cable was a single wire. After mid-century coaxial cable came into use, with amplifiers. Late in the century, all used optical fiber, and most now use optical amplifiers.Добавлено на ленту времени:
Дата:
2 сент 1956 г.
Сейчас
~ 69 г назад