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The Astrarium of Giovanni Dondi dall'Orologio was a complex astronomical clock built between 1348 and 1364 in Padova, Italy, by the doctor and clock-maker Giovanni Dondi dall'Orologio. The Astrarium had seven faces and 107 moving parts; it showed the positions of the sun, the moon and the five planets then known, as well as religious feast days.
Dondi writes that he obtained the idea of an astrarium from the Theorica planetarum of Giovanni Campano da Novara, who describes the construction of the equatorium. The astrarium was primarily a clockwork equatorium with astrolabe and calendar dials, and indicators for the sun, moon, and planets. It provided a continuous display of the major ...
An astrarium, also called a planetarium, is a medieval astronomical clock made in the 14th century by Italian engineer and astronomer Giovanni Dondi dell'Orologio. The Astrarium was modeled after the solar system and, in addition to counting time and representing calendar dates and holidays, showed how the planets moved around the celestial ...
12963734/istockphotoYou never know what treasures might be hiding in your attic, but if you’ve got a few vintage maps stashed in there, you may have struck gold. From early maps of America to ...
Antikythera mechanism, main fragment, c. 205 to 87 BC Carlo G Croce, reconstruction of Dondi's Astrarium, originally built between 1348 and 1364 in Padua. The Antikythera mechanism, discovered in 1901 in a wreck off the Greek island of Antikythera in the Mediterranean Sea, exhibited the diurnal motions of the Sun, Moon, and the five planets known to the ancient Greeks.
Archaeologists have discovered a mask mold believed to depict Medusa at Valley of the Temples Archaeological Park in in Sicily, Italy. The park is open to visitors on weekdays.
Rock and dust samples retrieved by NASA from the asteroid Bennu exhibit some of the chemical building blocks of life, according to research that provides some of the best evidence to date that ...
Since only six shaft graves were located in Grave Circle A, many scholars, such as John G. Younger, speculate why there were so many stelai in relation to burial sites. Younger concludes that the stelai do not refer to any specific burial, but instead represent a collective of the bodies buried in Circle A. [ 1 ] However, Giampaolo Graziadio ...