1663day.year

According to his own account, Otto von Guericke completes his book Experimenta Nova (ut vocantur) Magdeburgica de Vacuo Spatio, detailing his experiments on vacuum and his discovery of electrostatic repulsion.

In 1663, Otto von Guericke published Experimenta Nova Magdeburgica, detailing his vacuum experiments and electrostatic repulsion discovery.
Otto von Guericke completed and released Experimenta Nova (ut vocantur) Magdeburgica de Vacuo Spatio in 1663. He described his famous Magdeburg hemispheres experiment, revealing the power of atmospheric pressure. The book also documented his pioneering observations of electrostatic repulsion using sulfur globes. Guericke’s work laid important groundwork for future studies in pneumatics and electrostatics. His experimental approach helped establish the principles of modern experimental physics. The publication marked a milestone in the Scientific Revolution of the 17th century.
1663 Otto von Guericke electrostatic repulsion
1794day.year

Eli Whitney is granted a patent for the cotton gin.

In 1794, Eli Whitney was granted a patent for his cotton gin, revolutionizing cotton processing in the United States.
On March 14, 1794, Eli Whitney received U.S. Patent No. 72 for the cotton gin. His invention mechanized the separation of cotton fibers from seeds, vastly increasing efficiency. The cotton gin transformed the agricultural economy of the American South. It led to the rapid expansion of cotton plantations and intensified demand for enslaved labor. Whitney struggled to profit from his invention due to widespread patent infringements. Nonetheless, the cotton gin became one of the most influential technologies of the early Industrial Revolution.
1794 Eli Whitney patent cotton gin
1942day.year

Anne Miller becomes the first American patient to be treated with penicillin, under the care of Orvan Hess and John Bumstead.

On March 14, 1942, Anne Miller became the first American patient to be treated with penicillin, marking a breakthrough in antibiotic therapy.
On March 14, 1942, patient Anne Miller received the first therapeutic dose of penicillin administered in the United States. Under the supervision of Doctors Orvan Hess and John Bumstead at New Haven Hospital, she was treated for a severe streptococcal infection. The treatment led to a rapid and remarkable recovery, demonstrating penicillin’s potent antibacterial properties. This milestone followed Alexander Fleming’s discovery of penicillin and propelled efforts to mass-produce the antibiotic. During World War II, penicillin was scaled up for military and civilian use, saving countless lives from infections once considered deadly. Miller’s successful treatment heralded the dawn of the antibiotic era and revolutionized medical practice worldwide.
1942 penicillin Orvan Hess
1995day.year

Norman Thagard becomes the first American astronaut to ride to space on board a Russian launch vehicle.

Norman Thagard becomes the first American astronaut to fly aboard a Russian launch vehicle.
On March 14, 1995, NASA astronaut Norman Thagard launched aboard a Russian Soyuz spacecraft, marking the first time an American flew on a Russian vehicle. The mission was part of a cooperative exchange program between NASA and the Russian space agency. Thagard spent nearly eight days aboard the Mir space station conducting experiments in microgravity. His flight symbolized a thaw in post-Cold War relations and paved the way for future international collaboration in human spaceflight. The success of the mission laid groundwork for the International Space Station partnership that would follow.
1995 Norman Thagard astronaut
2017day.year

A naming ceremony for the chemical element nihonium takes place in Tokyo, with then Crown Prince Naruhito in attendance.

Element 113 is officially named nihonium at a ceremony in Tokyo.
On March 14, 2017, a naming ceremony for element 113 took place at RIKEN in Tokyo, Japan. The new element was officially christened 'nihonium', a nod to Japan's historic name, Nihon. Crown Prince Naruhito attended the event alongside the leading scientists responsible for its discovery. The naming recognized collaborative efforts of Japanese researchers in the synthesis of superheavy elements. The adoption of nihonium marked the completion of the seventh row of the periodic table. The ceremony celebrated a milestone in modern chemistry and elevated Japan's standing in the global scientific community.
2017 nihonium Crown Prince Naruhito