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These timelines of world history detail recorded events since the creation of writing roughly 5000 years ago to the present day. For events from c. 3200 BC – c. 500 see: Timeline of ancient history; For events from c. 500 – c. 1499, see: Timeline of post-classical history; For events from c. 1500, see: Timelines of modern history
1877: Ludwig Boltzmann: Statistical definition of entropy. 1880s: John Hopkinson develops three-phase electrical supplies, mathematically proves how multiple AC dynamos can be connected in parallel, improves permanent magnets, and dynamo efficiency, by the addition of tungsten, and describes how temperature effects magnetism ( Hopkinson effect ).
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 ...
The timeline of the evolutionary history of life represents the current scientific theory outlining the major events during the development of life on planet Earth. Dates in this article are consensus estimates based on scientific evidence , mainly fossils .
The history of life on Earth traces the processes by which living and extinct organisms evolved, from the earliest emergence of life to the present day. Earth formed about 4.5 billion years ago (abbreviated as Ga, for gigaannum) and evidence suggests that life emerged prior to 3.7 Ga. [1] [2] [3] The similarities among all known present-day species indicate that they have diverged through the ...
2001 – Celera Genomics and the Human Genome Project create a draft of the human genome sequence. It is published by Science and Nature Magazine. 2002 – Rice becomes the first crop to have its genome decoded. 2003 – The Human Genome Project is completed, providing information on the locations and sequence of human genes on all 46 chromosomes.
The following are timelines of modern history, from the end of the Middle Ages, c. 1400 – c. 1500, [1] ... For a timeline of events from 1501 to 1600, ...
Kutler, Stanley I. ed. Dictionary of American History (3rd Edition 10 Volumes, 2003) Martin, Michael. Dictionary of American History (Littlefield, Adams 1989) Morris. Richard, ed. Encyclopedia of American History (7th ed. 1996) Purvis, Thomas L. A Dictionary of American History (Blackwell 1997) Schlesinger, Arthur M., Jr.