Date in year · 1977 · The 1970s
On April 22, 1977, optical fiber is first used to carry live telephone traffic. The year's #1 song was "Tonight's the Night (Gonna Be Alright)" by Rod Stewart. Vitor Belfort, Haimar Zubeldia, Ivonne Teichmann would arrive in the same year.
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1977
1970s
Featured · April 22, 1977
An optical fiber, or optical fibre, is a flexible glass or plastic fiber that can transmit light from one end to the other. Such fibers are widely used in fiber-optic communication, where they permit transmission over longer distances and at higher bandwidths than electrical cables. Fibers are used instead of metal wires because signals travel along them with less loss and are immune to electromagnetic interference.
Around 1977
1977 (MCMLXXVII) was a common year starting on Saturday of the Gregorian calendar, the 1977th year of the Common Era (CE) and Anno Domini (AD) designations, the 977th year of the 2nd millennium, the 77th year of the 20th century, and the 8th year of the 1970s decade.
What happened
Light-conducting fiber
An optical fiber, or optical fibre, is a flexible glass or plastic fiber that can transmit light from one end to the other. Such fibers are widely used in fiber-optic communication, where they permit transmission over longer distances and at higher bandwidths than electrical cables. Fibers are used instead of metal wires because signals travel along them with less loss and are immune to electromagnetic interference.
Elsewhere that year
The class of 1977
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