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Polybius Square
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High Quality Content by WIKIPEDIA articles! Polybius did not originally conceive of his device as a cipher so much as an aid to telegraphy; he suggested the symbols could be signalled by holding up pairs of sets of torches. It has also been used, in the form of the "knock code", to signal messages between cells in prisons by tapping the numbers on pipes or walls. In this form it is said to have been used by nihilist prisoners of the Russian Czars, and also by American prisoners of war in the Vietnam War. Indeed it can be signalled in many simple ways (flashing lamps, blasts of sound, drums, smoke signals) and is much easier to learn than more sophisticated codes like the Morse code. However, it is also somewhat less efficient than the more complex codes.
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786130361358
- Editor Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
- Sprache Englisch
- Titel Polybius Square
- ISBN 978-613-0-36135-8
- Format Fachbuch
- EAN 9786130361358
- Jahr 2010
- Größe H220mm x B150mm x T5mm
- Untertitel Polybius Square, Cryptography, Ancient Greek, Polybius, Transposition Cipher, Plaintext, Greek Alphabet
- Genre Sprach- und Literaturwissenschaften
- Anzahl Seiten 84
- Herausgeber Betascript Publishers
- Gewicht 142g
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