Jacob Perkins (9 July 1766 – 30 July 1849) was an American inventor, mechanical engineer and physicist. Continue reading
Tag: System
Ancient Greek Philosopher Proposed a Heliocentric Universe
Aristarchus of Samos, a Greek philosopher and mathematician proposed a heliocentric universe theory in 300 BCE, that the earth and planets make circular orbits around the sun. Continue reading
Palace of Westminster Had The First Patented Cooling System
Palace of Westminster, Houses of Parliament in London, England was the first building with a patented cooling system installed in 1834. Continue reading
Callimachus of Cyrene
Callimachus (/kæˈlɪməkəs/; Greek: Καλλίμαχος, Kallimakhos; 310/305–240 BC) was a native of the Greek colony of Cyrene, Libya. He was a poet, critic and scholar at the Library of Alexandria and enjoyed the patronage of the Egyptian–Greek Pharaohs Ptolemy II Philadelphus and Ptolemy III Euergetes. Continue reading
Sumerians Develop Astrological System
Sumerians and other Mesopotamians developed the astrological system as early as 2500 BCE. Continue reading
Classification System Constructed for Alexandrian Library
A knowledge classification system was constructed at the royal library in Alexandria, Egypt by the Greek poet, Callimachus of Cyrene in third century BCE. Continue reading
Probation system for criminals
This was the first such system in the world. Boston, MA, USA, in 1878, legally established a probation system for criminals as a judicial policy. Continue reading
Italy Began to Electrify Main Line Tracks
In 1902, Italy began the process of electrification. Continue reading
Leonardo da Vinci
Leonardo di ser Piero da Vinci (Italian: [leoˈnardo di ˌsɛr ˈpjɛːro da (v)ˈvintʃi] ( listen); 15 April 1452 – 2 May 1519), more commonly Leonardo da Vinci or simply Leonardo, was an Italian polymath whose areas of interest included invention, painting, sculpting, architecture, science, music, mathematics, engineering, literature, anatomy, geology, astronomy, botany, writing, history, and cartography. Continue reading
Pigeon postal system
Pigeons were regularly used for official and military communications, Continue reading