On March 3, 1845, German mathematician Georg Cantor, creator of the set theory was born Set Theory is considered the fundamental theory of mathematics. He also proved that the real numbers are "more numerous" than the natural numbers, which was quite shocking for his contemporaries that there should be different numbers of infinity.
On March 6, 1787, German optician and physicist Joseph Fraunhofer - later enobled Ritter von Fraunhofer - was born. He is known for the discovery of the dark absorption lines known as Fraunhofer lines in the Sun's spectrum, and for making excellent optical glass and achromatic telescope objectives. Moreover, he is the name giver for the German Fraunhofer Society for the advancement of applied research.
In 1877 Thomas A. Edison conceived the first idea for his phonograph, the very first mechanical tool for recording and reproducing (replaying) sound. The phonograph also was the invention that first gained him public notice.
On March 1, 1858, German sociologist, philosopher and critic Georg Simmel was born. Along with Max Weber and Emile Durkheim, Simmel was one of the first generation sociologists, questioning the definition of society, nature, and culture.
On April 18, 1506, the foundation stone of the new St. Peter's Basilica in Rome took place under the guidance of Pope Julius II. A succession of popes and architects followed in the next 120 years, their combined efforts resulting in the present building. Today, St. Peter's is the most renowned work of Renaissance architecture and remains one of the largest churches in the world.
On March 29, 1819, Petroleum entrepreneur Edwin Laurentine Drake, also known as Colonel Drake, was born. He is popularly credited with being the first to drill for oil in the United States. His success launched an Oil Rush and brought the world a new energy source.
On May 24, 1686, Dutch-German-Polish physicist, engineer, and glass blower Daniel Gabriel Fahrenheit was born. He is is best known for his invention of the mercury-in-glass thermometer in 1714, and for developing a temperature scale that is now named after him.
On Dezember 7, 1888, Scottish inventor John Boyd Dunlop patented the pneumatic or inflatable tire. His invention is considered one of the basic building blocks of the automobile manufacturing industry. Today, over 1 billion tires are produced annually in over 400 tire factories.
On May 31, 1811, Albrecht Ludwig Berblinger, also known as the Tailor of Ulm, failed to give the proof that his machine was able to fly and fell into the Danube river during the demonstration. He is famous for having constructed a working flying machine, presumably a hang glider.
On August 17, 1586, German theologian, author, and mathematician Johann Valentin Andreae was born. He claimed to be the author of the Chymische Hochzeit Christiani Rosencreutz anno 1459 (1616, Strasbourg, the Chymical Wedding of Christian Rosenkreutz), one of the three founding works of Rosicrucianism, a philosophical secret society said to have been founded in late medieval Germany by Christian Rosenkreutz. Rosicrucianism holds a doctrine or theology "built on esoteric truths of the ancient past", which, "concealed from the average man, provide insight into nature, the physical universe and the spiritual realm."
On October 22, 1797, French balloonist and inventor André Garnerin, made the first save descent with a silk parachute from a ballon at Parc Monceau, Paris.