![Frederic Remington smoke signal](https://upload.wikimedia.org/wikipedia/commons/1/1c/Frederic_Remington_smoke_signal.jpg)
The smoke signal is one of the oldest forms of long-distance communication. It is a form of
visual communication used over a long distance. In general smoke signals are used to transmit news, signal danger, or to gather people to a common area.
History and usage
In
ancient China
The earliest known written records of the history of China date from as early as 1250 BC, from the Shang dynasty (c. 1600–1046 BC), during the reign of king Wu Ding. Ancient historical texts such as the '' Book of Documents'' (early chapte ...
, soldiers along the
Great Wall
The Great Wall of China (, literally "ten thousand Li (unit), ''li'' wall") is a series of fortifications that were built across the historical northern borders of ancient Chinese states and Imperial China as protection against Eurasian noma ...
sent smoke signals on its
beacon
A beacon is an intentionally conspicuous device designed to attract attention to a specific location. A common example is the lighthouse, which draws attention to a fixed point that can be used to navigate around obstacles or into port. More mode ...
towers to warn one another of enemy invasion.
The colour of the smoke communicated the size of the invading party.
By placing the beacon towers at regular intervals, and situating a soldier in each tower, messages could be transmitted over the entire 7,300 kilometres of the Wall.
Smoke signals also warned the inner castles of the invasion, allowing them to coordinate a defense and garrison supporting troops.
In
ancient Sri Lanka
The history of Sri Lanka is intertwined with the history of the broader Indian subcontinent and the surrounding regions, comprising the areas of South Asia, Southeast Asia and Indian Ocean.
The early human remains found on the island of Sri La ...
, soldiers stationed on the mountain peaks would alert each other of impending enemy attack (from
English people
The English people are an ethnic group and nation native to England, who speak the English language in England, English language, a West Germanic languages, West Germanic language, and share a common history and culture. The English identi ...
,
Dutch people
The Dutch (Dutch: ) are an ethnic group and nation native to the Netherlands. They share a common history and culture and speak the Dutch language. Dutch people and their descendants are found in migrant communities worldwide, notably in Arub ...
or
Portuguese people
The Portuguese people () are a Romance nation and ethnic group indigenous to Portugal who share a common culture, ancestry and language. The Portuguese people's heritage largely derives from the pre-Celts, Proto-Celts (Lusitanians, Conii) a ...
) by signaling from peak to peak. In this way, they were able to transmit a message to the King in just a few hours.
Misuse of the smoke signal is known to have contributed to the fall of the
Western Zhou Dynasty
The Western Zhou ( zh, c=, p=Xīzhōu; c. 1045 BC – 771 BC) was a royal dynasty of China and the first half of the Zhou dynasty. It began when King Wu of Zhou overthrew the Shang dynasty at the Battle of Muye and ended when the Quanrong nom ...
in the 8th century
BCE
Common Era (CE) and Before the Common Era (BCE) are year notations for the Gregorian calendar (and its predecessor, the Julian calendar), the world's most widely used calendar era. Common Era and Before the Common Era are alternatives to the or ...
.
King You of Zhou
King You of Zhou (; 795–771 BC), personal name Ji Gongsheng, was the twelfth king of the Chinese Zhou dynasty and the last of Western Zhou Dynasty. He reigned from 781 to 771 BC.
History
In 780 BC, a major earthquake hit Guanzhong. A sooths ...
had a habit of fooling his warlords with false warning beacons in order to amuse
Bao Si
Bao Si () was the concubine of the ancient Chinese sovereign King You of Zhou. She was considered one of the most beautiful Chinese women ever.
Life
Legends record that during the last years of the Xia dynasty, two dragons entered the palace of ...
, his concubine.
Polybius
Polybius (; grc-gre, Πολύβιος, ; ) was a Greek historian of the Hellenistic period. He is noted for his work , which covered the period of 264–146 BC and the Punic Wars in detail.
Polybius is important for his analysis of the mixed ...
, a Greek
historian
A historian is a person who studies and writes about the past and is regarded as an authority on it. Historians are concerned with the continuous, methodical narrative and research of past events as relating to the human race; as well as the stu ...
, devised a more complex system of alphabetical smoke signals around 150 BCE, which converted Greek alphabetic characters into numeric characters. It enabled messages to be easily signaled by holding sets of
torch
A torch is a stick with combustible material at one end, which is ignited and used as a light source. Torches have been used throughout history, and are still used in processions, symbolic and religious events, and in juggling entertainment. In ...
es in pairs. This idea, known as the "
Polybius square
The Polybius square, also known as the Polybius checkerboard, is a device invented by the ancient Greeks Cleoxenus and Democleitus, and made famous by the historian and scholar Polybius. The device is used for fractionating plaintext characters s ...
", also lends itself to
cryptography
Cryptography, or cryptology (from grc, , translit=kryptós "hidden, secret"; and ''graphein'', "to write", or ''-logia'', "study", respectively), is the practice and study of techniques for secure communication in the presence of adver ...
and
steganography
Steganography ( ) is the practice of representing information within another message or physical object, in such a manner that the presence of the information is not evident to human inspection. In computing/electronic contexts, a computer file, ...
. This cryptographic concept has been used with Japanese
Hiragana
is a Japanese syllabary, part of the Japanese writing system, along with ''katakana'' as well as ''kanji''.
It is a phonetic lettering system. The word ''hiragana'' literally means "flowing" or "simple" kana ("simple" originally as contrast ...
and the Germans in the later years of the
First World War
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fightin ...
.
North American indigenous peoples also communicated via smoke signal. Each
tribe
The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide usage of the term in English language, English is in the discipline of anthropology. This definition is contested, in p ...
had its own signaling system and understanding. A signaler started a fire on an elevation typically using damp grass, which would cause a column of smoke to rise. The grass would be taken off as it dried and another bundle would be placed on the fire. Reputedly the location of the smoke along the incline conveyed a meaning. If it came from halfway up the hill, this would signify all was well, but from the top of the hill it would signify danger.
Smoke signals remain in use today. The
College of Cardinals
The College of Cardinals, or more formally the Sacred College of Cardinals, is the body of all cardinals of the Catholic Church. its current membership is , of whom are eligible to vote in a conclave to elect a new pope. Cardinals are appoi ...
uses smoke signals to indicate the selection of a new
Pope
The pope ( la, papa, from el, πάππας, translit=pappas, 'father'), also known as supreme pontiff ( or ), Roman pontiff () or sovereign pontiff, is the bishop of Rome (or historically the patriarch of Rome), head of the worldwide Cathol ...
during a
papal conclave
A papal conclave is a gathering of the College of Cardinals convened to elect a Bishops in the Catholic Church, bishop of Rome, also known as the pope. Catholics consider the pope to be the Apostolic succession, apostolic successor of Saint ...
. Eligible cardinals conduct a
secret ballot
The secret ballot, also known as the Australian ballot, is a voting method in which a voter's identity in an election or a referendum is anonymous. This forestalls attempts to influence the voter by intimidation, blackmailing, and potential vote ...
until someone receives a vote of two-thirds plus one. The ballots are burned after each vote. Black smoke indicates a failed ballot, while white smoke means a new Pope has been elected.
Colored
smoke grenade
Smoke grenades used at demonstrations in Paris, 2008
upBritish L83A1 Smoke Grenade manufactured in May 2008. This grenade has already been used.
A smoke grenade is a canister-type grenade used as a signaling device, target or landing zone mark ...
s are commonly used by military forces to mark positions, especially during calls for artillery or air support.
Smoke signals may also refer to smoke-producing devices used to send
distress signal
A distress signal, also known as a distress call, is an internationally recognized means for obtaining help. Distress signals are communicated by transmitting radio signals, displaying a visually observable item or illumination, or making a soun ...
s.
Examples
Native Americans
Lewis and Clark's journals cite several occasions when they adopted the Native American method of setting the plains on fire to communicate the presence of their party or their desire to meet with local tribes.
Yámana
Yámanas of
South America
South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southe ...
used fire to send messages by smoke signals, for instance if a whale drifted ashore. The large amount of meat required notification of many people, so that it would not decay. They might also have used smoke signals on other occasions, thus it is possible that Magellan saw such fires (which inspired him to name the landscape
Tierra del Fuego
Tierra del Fuego (, ; Spanish for "Land of the Fire", rarely also Fireland in English) is an archipelago off the southernmost tip of the South American mainland, across the Strait of Magellan. The archipelago consists of the main island, Isla G ...
) but he may have seen the smoke or lights of natural phenomena.
[Extracts from the following book. E. Lucas Bridges: ''Uttermost Part of the Earth. Indians of Tierra del Fuego.'' 1949, reprinted by Dover Publications, Inc (New York, 1988).]
Noon Gun
The
Cape Town
Cape Town ( af, Kaapstad; , xh, iKapa) is one of South Africa's three capital cities, serving as the seat of the Parliament of South Africa. It is the legislative capital of the country, the oldest city in the country, and the second largest ...
Noon Gun
The Noon Gun has been a historic time signal in Cape Town, South Africa since 1806. It consists of a pair of black powder Dutch naval guns, fired alternatingly with one serving as a backup. The guns are situated on Signal Hill, close to the ...
, specifically the smoke its firing generates, was used to set
marine chronometer
A marine chronometer is a precision timepiece that is carried on a ship and employed in the determination of the ship's position by celestial navigation. It is used to determine longitude by comparing Greenwich Mean Time (GMT), or in the modern ...
s in
Table Bay
Table Bay (Afrikaans: ''Tafelbaai'') is a natural bay on the Atlantic Ocean overlooked by Cape Town (founded 1652 by Van Riebeeck) and is at the northern end of the Cape Peninsula, which stretches south to the Cape of Good Hope. It was named ...
.
Aboriginal Australians
Aboriginal Australians
Aboriginal Australians are the various Indigenous peoples of the Australian mainland and many of its islands, such as Tasmania, Fraser Island, Hinchinbrook Island, the Tiwi Islands, and Groote Eylandt, but excluding the Torres Strait Islands ...
throughout Australia would send up smoke signals for various purposes.
Sometimes to notify others of their presence, particularly when entering lands which were not their own.
[Myers, 1986: 100] Sometimes used to describe visiting whites, smoke signals were the fastest way to send messages.
Smoke signals were sometimes to notify of incursions by hostile tribes, or to arrange meetings between hunting parties of the same tribe. This signal could be from a fixed lookout on a ridge or from a mobile band of tribesman.
"Putting up a smoke" would often result in nearby individuals or groups replying with their own signals.
To carry information, the colour of the smoke was varied, sometimes black, white or blue depending on whether the material being burnt was wet grass, dry grass, reeds or other, and the shape of the smoke could be a column, ball or smoke ring. This message could include the names of individual tribesmen.
Like other means of communication, signals could be misinterpreted. In one recorded instance, a smoke signal reply translated as "we are coming" was misinterpreted as joining a war party for protection of the tribe when it was actually hunting parties coming together after a successful hunt.
Aviation
Modern
aviation
Aviation includes the activities surrounding mechanical flight and the aircraft industry. ''Aircraft'' includes fixed-wing and rotary-wing types, morphable wings, wing-less lifting bodies, as well as lighter-than-air craft such as hot air ...
has made
skywriting
Skywriting is the process of using one or more small aircraft, able to expel special smoke during flight, to fly in certain patterns that create writing readable from the ground. These messages can be advertisements, general messages of celebrat ...
possible.
Notes
References
*
* Translation of the original: Title means: “Stone of sun”; chapter means: “The land of burnt-out fires”. (Leningrad: "Children's Literature" Publishing.)
*
External links
{{DEFAULTSORT:Smoke Signal
History of telecommunications
History of ancient China
Native American culture
Native American history
Smoke
Optical communications
Semaphore
Western (genre) staples and terminology