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1924: Edwin Hubble: the discovery that the Milky Way is just one of many galaxies; 1925: Erwin Schrödinger: Schrödinger equation (Quantum mechanics) 1925: Cecilia Payne-Gaposchkin: Discovery of the composition of the Sun and that hydrogen is the most abundant element in the Universe; 1927: Werner Heisenberg: Uncertainty principle (Quantum ...
The Lower Paleolithic period lasted over 3 million years, during which there many human-like species evolved including toward the end of this period, Homo sapiens.The original divergence between humans and chimpanzees occurred 13 (), however interbreeding continued until as recently as 4 Ma, with the first species clearly belonging to the human (and not chimpanzee) lineage being ...
Such discoveries are often a multi-step, multi-person process. Multiple discovery sometimes occurs when multiple research groups discover the same phenomenon at about the same time, and scientific priority is often disputed. The listings below include some of the most significant people and ideas by date of publication or experiment.
However, numerous discoveries in recent decades have pushed the timeline back even further. For example, archaeologists found older artifacts at a 14,500-year-old site in Chile.
This discovery was critical to the formulation of the Watson-Crick Model of DNA structure. Neil Bartlett mixes xenon and platinum hexafluoride leading to the first synthesis of a noble gas compound, xenon hexafluoroplatinate (1962). Robert Burns Woodward announces the total synthesis of Vitamin B-12 by a team he led (1973).
(Top) 1 Ancient times. 2 Middle Ages. 3 15th–16th century. ... 10 19th–20th centuries. 11 20th century. 12 20th–21st century. 13 Fictional theoretical ...
[11] [12] [13] Considered by historians to be the world's first residential university [14] and among the greatest centres of learning in the ancient world, it was located near the city of Rajagriha (now Rajgir) and about 90 kilometres (56 mi) southeast of Pataliputra (now Patna) and operated from 427 until 1197 CE. [15]
Biruni is one of the best-known early physicists . Abu sahl Al-Quhi – İran (born 940) Xiaoyi Bao – Canada; Mani Lal Bhaumik – United States (born 1931) Tom Baehr-Jones – United States (born 1980) John Norris Bahcall – United States (1934–2005) Gilbert Ronald Bainbridge – U.K. (1925–2003) Cornelis Bakker – Netherlands (1904 ...