On October 11, 1745, German cleric Ewald Georg von Kleist and independently of him Dutch scientist Pieter van Musschenbroek from the city of Leiden, Netherlands, invented a predecessor of today's battery, the Leyden Jar.
On November 27, 1852, Augusta Ada King, Countess of Lovelace, who is considered to be the world's very first programmer, passed away. Every student of computer science should have heart of the world's first programmer, Ada Countess of Lovelace, assistant to Charles Babbage, inventor of the very first programmable (mechanical) computer, the analytical engine.
On March 2, 1544, English diplomat and scholar Sir Thomas Bodley was born. His greatest achievement was the re-founding of the library at Oxford that was named in his honor. Moreover, he established new ideas and practices library of which also modern libraries stil benefit today.
On May 2nd, 1601 (or 1602), German Jesuit scholar Athanasius Kircher was born. He has published most notably in the fields of oriental studies, geology, and medicine, and has been compared to Leonardo da Vinci for his enormous range of interests. He is regarded as one of the founders of Egyptology for his (mostly fruitless) efforts in deciphering Egyptian hieroglyphs, wrote an encyclopedia about China, studied volcanos and fossils, was one of the very first to observe microbes thorough a microscope, and experimented with the laterna magica as a predecessor of photography.
On July 15, 1848, Italian engineer, sociologist, economist, political scientist and philosopher Vilfredo Federico Damaso Pareto was born. He made several important contributions to economics, particularly in the study of income distribution and in the analysis of individuals' choices. The Pareto principle was named after him and built on observations of his such as that 80% of the land in Italy was owned by 20% of the population.
On 5 July 1841, British pioneer of organized tourism Thomas Cook arranged to take a group of 540 temperance campaigners from Leicester Campbell Street station to a rally in Loughborough, eleven miles away. This led him to start his own business founding the world's first and most famous travel agency.
On July 19, 64 AD, the Great Fire of Rome (Latin: Magnum Incendium Romae) occurred and continued burning until July 26 during the reign of emperor Nero. According to the Roman historian Tacitus three of the 14 city districts were completely burned down, in seven districts only debris and rubble was left from the former buildings, and only 4 districts were not affected.