One of the great technical achievements that revolutionized the idea of time and space, opening a new era in the history of communication, is telegraphy. It is based on the transmission of electrical signals through a cable over long distances, allowing people to communicate instantly. The telegraph spread very quickly and a network of wires stretched around the world.
In 1837, the American painter and physicist Samuel Morse invented the first electromagnetic device for telegraphy, patented in 1840. To send messages by wire, Morse developed in 1838 a simple code of dots and dashes, which represented the letters of the alphabet, known as "Morse code ".
Both Morse code and the telegraph machine were improved over time, with the telegraph becoming the most widespread system of communication and information transmission for more than a century, until the advent of the Internet. The telegraph system consisted of a series of stations repeaters along the transmission line route. Each station had an operator who received and transmitted messages by telegraph. The Morse machine transmitted about 25 words per minute, which were recorded in code on a paper tape. The operator in charge of transmitting the message would decode it and write it on paper using a special typewriter.
In Bessarabia, the telegraph entered in 1860: on April 8, the Bender telegraph station began its activity, and on April 24, the one in Chisinau, following the construction of the first Odesa-Chisinau-Leova telegraph line. Currently, telegraph services have been discontinued. The only ones who still use coded communication are radio amateurs.
The Morse telegraph machine shown comes from the Osinoostrovsky electrotechnical plant, Soviet Union, and dates back to 1934. The exhibit was restored by Mihail Culașco.
Tyragetia, serie nouă, vol. V [XX], nr. 1, Arheologie. Istorie Antică
L’usage de saler le moût dans la perspective de l’exportation lointaine de vins de qualité (Cos, Rhodes, Lesbos) est observé chez les Grecs dans l’Antiquité classique. L’utilisation du sel permet de stabiliser leur fermentation. La dose efficace ne doit pas être dépassée. On peut aussi adoucir un cru ayant trop de corps en y versant de l’eau salée, avec modération. D’où le recours au salage du vin que pratiquent les agronomes romains, au témoignage de Caton l’Ancien et de Columelle. Il ne semble pas que la qualité du vin y gagne dans tous les cas. On est perplexe quand le premier se flatte que son vin ne soit pas pire que celui de Cos. Par delà cette brève réflexion œnologique, les informations métrologiques relevées (dosage en chlorure de sodium) ouvrent de nouvelles perspectives sur les ingesta sodés dans l’Antiquité.
Marius Alexianu
Un aspect de l’économie thrace: esclaves contre sel
Tyragetia, serie nouă, vol. I [XVI], nr. 1, Arheologie. Istorie Antică Chișinău, 2007
One of the great technical achievements that revolutionized the idea of time and space, opening a new era in the history of communication, is telegraphy. It is based on the transmission of electrical signals through a cable over long distances, allowing people to communicate instantly...
The National Museum of History of Moldova takes place among the most significant museum institutions of the Republic of Moldova, in terms of both its collection and scientific reputation.
The National Museum of History of Moldova takes place among the most significant museum institutions of the Republic of Moldova, in terms of both its collection and scientific reputation.
The National Museum of History of Moldova takes place among the most significant museum institutions of the Republic of Moldova, in terms of both its collection and scientific reputation.