A fiber optic cable is wire which has optical materials (typically glass) covered in plastic that are applied to deliver information by pulses of sunshine.The finish helps protect some protection from ultraviolet rays, cool, electromagnetic interference from other forms of wiring, in addition to the materials from heat in the sun.
For indoor applications, the jacketed fiber is generally enclosed, with a bundle of flexible fibrous polymer strength members like aramid (e.g. Twaron or Kevlar), in a lightweight plastic cover to form a simple cable.Each end of the cable may be terminated with a specialized optical fiber connector to allow it to be easily connected and disconnected from transmitting and receiving equipment.
Fiber optics permit an even faster data transmission than regular copper cables, because of the fact they have a higher bandwidth.
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The hard disk was invented on September 13, 1956 by IBM team led by Rey Johnson (considered as “father” of the disk drive). Earlier hard disk drives were large and cumbersome devices.