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He discovered that the general field equations predicted a universe that was dynamic, either contracting or expanding. As observational evidence for a dynamic universe was lacking at the time, Einstein introduced a new term, the cosmological constant , into the field equations, in order to allow the theory to predict a static universe.
Famous people quotes about life. 46. “There is only one certainty in life and that is that nothing is certain.” —G.K. Chesterton (June 1926) 47. “Make it a rule of life never to regret and ...
1493: Uncovering the New World Columbus Created is a nonfiction book by Charles C. Mann first published in 2011. [1] It covers the global effects of the Columbian Exchange , following Columbus's first landing in the Americas, that led to our current globalized world civilization.
Observations Concerning the Increase of Mankind, Peopling of Countries, etc. is a short essay written in 1751 by American polymath Benjamin Franklin. [1] It was circulated by Franklin in manuscript to his circle of friends, but in 1755 it was published as an addendum in a Boston pamphlet on another subject. [2]
The book, subtitled A History of Man's Search to Know His World and Himself, is a history of human discovery. Discovery in many forms is described: exploration, science, medicine, mathematics, and more-theoretical ones, such as time, evolution, plate tectonics, and relativity.
Now, a new discovery by NASA’s Perseverance rover shows a trifecta of compelling evidence—including the presence of water, organic compounds, and a chemical energy source—all on one rock ...
Sir Ronald Ross Institute of Parasitology is the building in Begumpet where Ross made the discovery that malaria was transmitted by the female anopheles mosquito on 20 August. 20 August later came to known as the World Mosquito Day. The lab has been transformed into a small museum exhibiting photos of Ross and his family.
Abraham Ortelius's 1570 world map, the world's first modern atlas. Geographical exploration, sometimes considered the default meaning for the more general term exploration, refers to the practice of discovering remote lands and regions of the planet Earth. [1] It is studied by geographers and historians. [citation needed]