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15

The communications between national leaders are normally conducted through the embassies. I.e., Churchill would send a Typex-encrypted telegram to the British Embassy in Washington, DC, it is decrypted there, and delivered in person to the White House. Similarly, Roosevelt would send a SIGABA-encrypted message to the US Embassy in London, it is decrypted ...


15

The Enigma machines and the breaking of the Enigma code were not the main determinants of the outcome of World War II, but did contribute to the outcome. There were only a few types of Enigma machines, so they had to be capable of using different encryption keys. If machines used the same encryption key for message after message, the encryption would be ...


10

"A Companion to the Ancient Greek Language" By Egbert J. Bakker The only context in which titles can have been at all common in Greek society is addresses from slaves to their masters and mistresses. In literary representations of such addresses δέσποτα “master” and δέσποινα "mistress" frequently occur, but they are by no means the rule, and in ...


9

Not quite the traditional castaway rescue, but there was the case of the Meermin slave mutiny, where the imprisoned slavers used a message in a bottle to alert shore forces to the slave mutiny, resulting in the defeat of the slaves and rescue of the slavers. There's also the case of Chunosuke Matsuyama, where a shipwrecked Japanese seaman sent a message in ...


9

Throughout history this has proven to be a difficult task for a number of empires, including the Greeks, the Chinese, the Persians, and the Romans. The larger their territory, the more difficult it became to manage and control them. The real shortcoming was in the inability to communicate quickly and effectively. In some instances, those who needed ...


9

ἀνάξε (pronounced ah-NAHX-eh) is the vocative, if I've handled the accent right. I vaguely suspect it might be ἄναξε (AH-nax-eh) - my greek is rusty. Example (Odyssey 24.251): οὐ μὲν ἀεργίης γε ἄναξ ἕνεκ᾽ οὔ σε κομίζει, "It is not on account of your idleness your master does not take care of you"


8

The "Global Village" (todays metaphor for the world wide web) comes to my mind, predicted by probably most influential communication theorist Marshall McLuhan. In his book, "The Gutenberg Galaxy" (1962), he basically predicts PC, WorldWideWeb, Wikipedia, Google, social-media, e-commerce everybody uses today in the western world: “The next medium, ...


7

The Roman Empire had the cursus publicus, which maintained an infrastructure of horses and way stations. The messenger himself was supplied by the one sending the message. It was used for transporting messages, magistrates, and some heavy goods too. Important messages typically travelled at roughly 50 miles per day.


6

"Allies" capturing Engima machines (what you really mean was British navy, who then in Hollywood were magically transformed into US navy) was really of no importance. What was important was capturing code books. The wiring of the Enigma machine was known since the 1930s, when Polish mathematicians managed to reconstruct it from very limited information. ...


6

Yes, they do allow multiple keys. Typically they had a new key every day. See this Wikipedia article: Though Enigma had some cryptographic weaknesses, in practice it was German procedural flaws, operator mistakes, laziness, failure to systematically introduce changes in encipherment procedures, and Allied capture of key tables and hardware that, during ...


6

From this article: http://postalmuseum.si.edu/letterwriting/lw04.html Although the purpose of stopping mail service to the South was to isolate and corner the Confederate states, some mail still managed to cross the border in what were known as “flag-of-truce” ships. When the Union began blockading southern ports, letters were often carried across the ...


5

The German Wikipedia article lists the following numbers (most likely taken from Salvador Bofarull's book "Pigeon mail through history" which I couldn't find online, the numbers are confirmed in a bunch of other places however): Estimated 100,000 homing pigeons used during WWI, with a success rate of 95% (remarkably reliable). US Army had 54,000 homing ...


5

I think that the short answer to your question is: No. The Empire survived very well for about 400 years (let's say from the death of Augustus in 14 CE to circa 400 when the so-called migration of the peoples began to be felt in the Empire) with the same communications structure. Ancient states required much less centralized decision making than modern ...


4

In the link to Wikipedia that you have provided it is written that the most ancient form of cryptography is the classical cypher that was invented circa 1900 BC. Akkadian Empire knew writing and even had Enheduanna, the first poet in history whom we know by name, and established in 2334 BC and disestablished in 2154 BC. So the empire existed before ...


3

Tim Blanning The Pursuit of Glory has a whole chapter dedicated to this covering Europe between 1648 and 1815. It covers costs, travel times, and road availability as well as water ways. However, that is just a narrow part in time and local.


2

American Experience (on PBS) aired a documentary called The Great Transatlantic Cable many years back. I don't remember any mention of the clepsydra, but the story of the first cable burning out after just a few weeks in most assuredly in there. Basically, the engineers had assumed that you needed to push a lot of current through the wire, when in fact, just ...


2

Wikipedia claims that, while color printing was known even in the earliest printed works, it was various Chromoxylography processes developed in the 1800's that first made color printing practical enough to be commonplace. In the 19th century a number of different methods of color printing, using woodcut (technically Chromoxylography) and other ...


2

I think Radio was more revolutionary - is was the first free (advertiser-paid) real time one-to-many not requiring any skills from the recipient (illiterates can listen) not requiring recipient to withdraw form menial tasks (one can work on a sewing machine while listening - TV actually does not have this feature!) information distribution system. The ...


1

The first Enigma machine to come to the notice of Germany's foes was in Poland, around 1928. Polish customs (and their intelligence service) were suspicious of the German embassy's unseemly desire to get a certain package out of Customs on a Saturday. The Poles spent the weekend copying the manuals and examining the mechanism, and then delivered it in the ...


1

People used paints from the very ancient time. When first books appeared, people quickly accustomed to paint the pages and make colorful images. In the Middle Ages the majority of books published had colorful images in them. The state symbols, coats of arms, military banners and religious icons were also colorful. With the invention of printing press the ...


1

In general, a commoner would address a gentleman as "Monsieur" and a lady as "Madame". Among nobility the practice would be the same, although the king is addressed as "sire". If a person was a servant of someone else they may use a special term of subservience. For example, in the play Le Cid (1637) by Corneille, when the page addresses his mistress he ...


1

See article II of the Treaty of Ghent, ending the War of 1812. http://war1812.tripod.com/treaty.html It lays out a series of delay times for many different parts of the world for the terms of the Treaty to come into effect.


1

I'd say that accounting for propagation delay explicitly with the day + n method is the exception rather than the rule. The most common accounting for this is to consider the law/edict in effect only when it is officially received. Thus the process goes like this: After drafting the edict, the sovereign signs or seals an edict, indicating authenticity and ...


1

From Wikipedia "In order to maintain control and improve administration, various schemes to divide the work of the Emperor by sharing it between individuals were tried between 293 and 324, from 337 to 350, from 364 to 392, and again between 395 and 480. Although the administrative subdivisions varied, they generally involved a division of labour between ...



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