Who received the first US patent for the telephone, in 1876?
AnswerAlexander Graham Bell
Alexander Graham Bell was granted US patent 174,465 for the telephone in March 1876.
Tech · Facts & stats
Tele facts & stats
7 fact-checked facts about telecommunications, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
Fiber optic cables carry signals in the form of what?
AnswerLight
Optical fibers carry data as pulses of light through thin strands of glass or plastic.
Going deeper
Guglielmo Marconi sent the first transatlantic radio signal in which year?
Answer1901
In December 1901 Marconi reported receiving the Morse letter S in Newfoundland, sent from Cornwall.
A geostationary communications satellite completes one orbit in about how long?
Answer24 hours
A geostationary orbit matches Earth's rotation, so the satellite seems fixed in the sky.
The unit of frequency, the hertz, is named after a scientist who demonstrated what?
AnswerRadio waves
Heinrich Hertz proved in the 1880s that electromagnetic radio waves exist.
Expert level
Which satellite relayed the first live transatlantic television pictures in 1962?
AnswerTelstar 1
Telstar 1, launched in July 1962, relayed the first live TV broadcasts between the US and Europe.
Which effect keeps light traveling inside an optical fiber?
AnswerTotal internal reflection
Light hitting the fiber's inner boundary at a shallow angle reflects back in instead of escaping.
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