Discover published sets by community

A type of communication technology that uses orbital satellites to relay signals; satellite communication is essential for global broadcasting, navigation, and telecommunications.

A global network of interconnected networks that allows data exchange worldwide; the Internet has transformed communication, commerce, and access to information.

A fast mail service that crossed the North American continent from the Missouri River to the Pacific coast; the Pony Express was a significant communication link before the telegraph.

An invention by Alexander Graham Bell that converted human voice into electrical signals; the telephone greatly influenced social and business interactions by allowing real-time voice communication across distances.

A wireless telecommunications device that receives and displays alphanumeric messages; pagers were important communication devices for on-the-go professionals, especially in the medical field.

A technology that allows the transmission of signals by modulation of electromagnetic waves; radio transformed the way information was shared and became a popular medium for entertainment and news.

A device for applying pressure to an inked surface resting upon a print medium; the printing press enabled the mass production of books and literacy expansion, affecting education and the spread of ideas.

An electronic device capable of transmitting moving images; television became a dominant form of entertainment and information, impacting public opinion and culture.

A language which uses manual communication and body language to convey meaning; sign language is crucial for communication among the deaf and hard of hearing communities.

A telegraphy system conveying information at a distance by means of visual signals with hand-held flags, rods, disks, paddles, or occasionally bare or gloved hands; semaphore flag signaling is still used in maritime communication.

A method of sending messages using homing pigeons; this played a crucial role in delivering important information before electronic communication became widespread.

A communication system using a line of stations, typically towers, for the purpose of conveying textual information by means of visual signals; the optical telegraph predates the electric telegraph and was used for tactical and strategic communications during the Napoleonic Wars.

Pigeons especially bred for their homing ability, used for delivering messages; carrier pigeons were vital in situations where other communication methods were unavailable.

A device that transmits scanned documents via the telephone network; the fax machine was a crucial business communication tool before the advent of digital communication.

A message sent by a submarine telegraph cable, often shortened to cable or wire; cablegrams were important in international communication, especially in the 19th and early 20th centuries.

A technology that allows users in different locations to hold face-to-face meetings without having to move to a single location; video conferencing became vital for business and personal communication, particularly evident during the COVID-19 pandemic.

A portable telephone that makes and receives calls over a radio frequency; mobile phones have become ubiquitous and are crucial for personal and business communication.

A system of conveying information by means of visual signals, using towers with pivoting arms; semaphore lines were a precursor to the telegraph in long-distance communication.

A method of exchanging digital messages over the Internet; Email has become an integral part of personal and professional communication due to its speed and convenience.

A method of transmitting text information as a series of on-off tones, lights, or clicks; Morse code was critical during the telegraph era for sending messages over long distances before telephones.

Drums were used in Africa, the Americas, and other regions for sending messages over extended distances by using rhythm and repetition; they could quickly transmit news and coordinated activities.

An ancient form of long-distance communication used by various cultures; smoke signals were significant in relaying messages over long distances when no advanced technology existed.

A wireless solar telegraphy device that signals by flashes of sunlight reflected by a mirror; the heliograph was used for military communication in the late 19th and early 20th centuries.

The first form of electronic communication invented in the early 19th century; the telegraph revolutionized long-distance communication by transmitting electrical signals over wires.