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.
On the origin and development of portable firearms (14th-19th centuries)
Tyragetia, serie nouă, vol. VII [XXII], nr. 2, Istorie. Muzeologie
Weapons have always been and will be of great importance in the history of mankind. Almost all social and historical development of human civilization is intrinsically linked to the invention and improvement of the various models of weapons. Focusing on the history of firearms, we find that their origin remains somewhat obscure. It is well known that the Chinese invented and used gunpowder for firearms since the beginning of the 11th century, and in Europe the formula of gunpowder spread in the 14th century through Arab mediation. Over time, the need to improve the technical and ballistic characteristics of firearms increased. Inventions, innovations, and more or less successful attempts to technical improvement have led to the great development of firearms over the centuries.
Sergiu Dobrea
Memorial museum in the Republic of Moldova: typology and classification
Tyragetia, serie nouă, vol. V [XX], nr. 2, Istorie. Muzeologie
Sergiu Dobrea
On the financing of museum institutions in the Republic of Moldova
Tyragetia, serie nouă, vol. VI [XXI], nr. 2, Istorie. Muzeologie
Sergiu Dobrea
Some considerations on the museum exhibition „Arms and Military Equipment: the Evolution in Time"
Tyragetia, serie nouă, vol. VIII [XXIII], nr. 2, Istorie. Muzeologie
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.