Phryctoria () was a

semaphore Semaphore (; ) is the use of an apparatus to create a visual signal transmitted over distance. A semaphore can be performed with devices including: fire, lights, flags, sunlight, and moving arms. Semaphores can be used for telegraphy when arra ...

system used in

Ancient Greece Ancient Greece () was a northeastern Mediterranean civilization, existing from the Greek Dark Ages of the 12th–9th centuries BC to the end of classical antiquity (), that comprised a loose collection of culturally and linguistically r ...

. The ''phryctoriae'' were towers built on selected mountaintops so that one tower (''phryctoria'') would be visible to the next tower (usually 20 miles away). The towers were used for the transmission of a specific prearranged message. One tower would light its flame, the next tower would see the fire, and light its own. In

Aeschylus Aeschylus (, ; ; /524 – /455 BC) was an ancient Greece, ancient Greek Greek tragedy, tragedian often described as the father of tragedy. Academic knowledge of the genre begins with his work, and understanding of earlier Greek tragedy is large ...

tragedy ''

Agamemnon In Greek mythology, Agamemnon (; ''Agamémnōn'') was a king of Mycenae who commanded the Achaeans (Homer), Achaeans during the Trojan War. He was the son (or grandson) of King Atreus and Queen Aerope, the brother of Menelaus, the husband of C ...

'', a slave watchman character learns the news of

Troy Troy (/; ; ) or Ilion (; ) was an ancient city located in present-day Hisarlik, Turkey. It is best known as the setting for the Greek mythology, Greek myth of the Trojan War. The archaeological site is open to the public as a tourist destina ...

's fall from

Mycenae Mycenae ( ; ; or , ''Mykē̂nai'' or ''Mykḗnē'') is an archaeological site near Mykines, Greece, Mykines in Argolis, north-eastern Peloponnese, Greece. It is located about south-west of Athens; north of Argos, Peloponnese, Argos; and sou ...

by carefully watching a fire beacon.

Thucydides Thucydides ( ; ; BC) was an Classical Athens, Athenian historian and general. His ''History of the Peloponnesian War'' recounts Peloponnesian War, the fifth-century BC war between Sparta and Athens until the year 411 BC. Thucydides has been d ...

wrote that during the

Peloponnesian War The Second Peloponnesian War (431–404 BC), often called simply the Peloponnesian War (), was an Ancient Greece, ancient Greek war fought between Classical Athens, Athens and Sparta and their respective allies for the hegemony of the Ancien ...

, the Peloponnesians who were in

Corcyra Corfu ( , ) or Kerkyra (, ) is a Greece, Greek island in the Ionian Sea, of the Ionian Islands; including its Greek islands, small satellite islands, it forms the margin of Greece's northwestern frontier. The island is part of the Corfu (regio ...

were informed by night-time beacon signals of the approach of sixty Athenian vessels from

Lefkada Lefkada (, ''Lefkáda'', ), also known as Lefkas or Leukas (Ancient Greek and Katharevousa: Λευκάς, ''Leukás'', modern pronunciation ''Lefkás'') and Leucadia, is a Greece, Greek list of islands of Greece, island in the Ionian Sea on the ...

. When Cnemus attacked

Salamis Island Salamis ( ; ) or Salamina () is the largest Greece, Greek island in the Saronic Gulf, about from the coast of Athens' port of Piraeus and about west of Athens center. The chief city, Salamina (city), Salamina, lies in the west-facing core of ...

, the Salaminians informed the Athenians and asked for help by beacon-fires.

Phryctoriae and Pyrseia

Ιn the 2nd century BC, the

Greek Greek may refer to: Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group *Greek language, a branch of the Indo-European language family **Proto-Greek language, the assumed last common ancestor of all kno ...

engineers from

Alexandria Alexandria ( ; ) is the List of cities and towns in Egypt#Largest cities, second largest city in Egypt and the List of coastal settlements of the Mediterranean Sea, largest city on the Mediterranean coast. It lies at the western edge of the Nile ...

, Cleoxenes () and Democletus () invented the ''pyrseia'' (). Πυρσεία from πυρσός which means torch. The letters of the

Greek alphabet The Greek alphabet has been used to write the Greek language since the late 9th or early 8th century BC. It was derived from the earlier Phoenician alphabet, and is the earliest known alphabetic script to systematically write vowels as wel ...

were listed on a table. Each letter corresponded to a row and a column on the table. By using two groups of torches (five torches in every group), the left indicating the row and the right the column of the table, they could send a message by defining a specific letter through combination of light torches. Polybius. The Histories, Volume IV: Book 10 P. 46. Translated by W. R. Paton. Revised by F. W. Walbank, Christian Habicht. Loeb Classical Library 159. Cambridge, MA: Harvard University Press, 2011. "These torches having been lowered the dispatcher of the message will now raise the first set of torches on the left side indicating which tablet is to be consulted, i.e., one torch if it is the first, two if it is the second, and so on. Next he will raise the second set on the right on the same principle to indicate what letter of the tablet the receiver should write down" The coding system was as follows: When they wanted to send the letter ''O'' (

omicron Omicron (, ; uppercase Ο, lowercase ο, ) is the fifteenth letter of the Greek alphabet. This letter is derived from the Phoenician letter ayin: . In classical Greek, omicron represented the close-mid back rounded vowel in contrast to '' o ...

), they fired five torches on the right set and three torches on the left set.

References

{{Reflist

External links

The Medean Wars - Part II
Ancient Greek technology Ancient Greek military equipment Communications in Greece History of telecommunications Signalling lights Beacons Semaphore

Phryctoriae and Pyrseia

See also

References

External links