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Timelines Of World History
The following is a list of timeline articles: Prehistory *For events dating from the formation of the universe see: Timeline of the universe *For events dating from the formation of the planet to the rise of modern humans see: Timeline of natural history, Timeline of the evolutionary history of life and Timeline of human evolution. *For events dating from the first appearance of ''Homo sapiens'' to before the invention of writing see: Timeline of prehistory History These timelines of world history detail recorded events since the creation of writing roughly 5000 years ago to the present day. *For events from see: Timeline of ancient history *For events from , see: Timeline of post-classical history *For events from , see: Timelines of modern history Future *For future timelines, see: Timelines of the future See also * ChronoZoom * Human history * List of years * List of decades, centuries, and millennia The list below includes links to articles with further details for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of The Universe
The timeline of the universe begins with the Big Bang, 13.799 ± 0.021 billion years ago, and follows the formation and subsequent evolution of the Universe up to the present day. Each ''era'' or ''age'' of the universe begins with an "epoch", a time of significant change. Times on this list are relative to the moment of the Big Bang. First 20 minutes Planck epoch * c. 0 seconds (13.799 ± 0.021 Gya): Planck epoch begins: Big Bang occurs in which ordinary space and time develop out of a primeval state described by a quantum theory of gravity or "theory of everything". All matter and energy of the universe is contained in a hot, dense point (gravitational singularity) Grand unification epoch * c. 10−43 seconds: Gravity separates and begins operating on the universe—the remaining fundamental forces stabilize into the electronuclear force, also known as the Grand Unified Force or Grand Unified Theory (GUT), mediated by (the hypothetical) X and Y bosons which allo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of Natural History
This timeline of natural history summarizes significant geological and biological events from the formation of the Earth to the arrival of modern humans. Times are listed in millions of years, or megaanni ( Ma). Dating of the geologic record The geologic record is the strata (layers) of rock in the planet's crust and the science of geology is much concerned with the age and origin of all rocks to determine the history and formation of Earth and to understand the forces that have acted upon it. Geologic time is the timescale used to calculate dates in the planet's geologic history from its origin (currently estimated to have been some 4,600 million years ago) to the present day. Radiometric dating measures the steady decay of radioactive elements in an object to determine its age. It is used to calculate dates for the older part of the planet's geological record. The theory is very complicated but, in essence, the radioactive elements within an object decay to form isoto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of The Evolutionary History Of Life
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. In biology, evolution is any change across successive generations in the heritable characteristics of biological populations. Evolutionary processes give rise to diversity at every level of biological organization, from kingdoms to species, and individual organisms and molecules, such as DNA and proteins. The similarities between all present day organisms imply a common ancestor from which all known species, living and extinct, have diverged. More than 99 percent of all species that ever lived (over five billion) are estimated to be extinct. Estimates on the number of Earth's current species range from 10 million to 14 million, with about 1.2 million or 14% documented, the rest not yet described. However, a 2016 report estim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of Human Evolution
The timeline of human evolution outlines the major events in the evolutionary lineage of the modern human species, ''Homo sapiens'', throughout the history of life, beginning some 4 billion years ago down to recent evolution within ''H. sapiens'' during and since the Last Glacial Period. It includes brief explanations of the various taxonomic ranks in the human lineage. The timeline reflects the mainstream views in modern taxonomy, based on the principle of phylogenetic nomenclature; in cases of open questions with no clear consensus, the main competing possibilities are briefly outlined. Overview of taxonomic ranks A tabular overview of the taxonomic ranking of ''Homo sapiens'' (with age estimates for each rank) is shown below. Timeline Unicellular life Animalia Chordata Tetrapoda Mammalia Primates Hominidae Homo Homo sapiens See also * Chronology of the universe * Evolution of human intelligence * Human evolution * Recent human evolution ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of Prehistory
This timeline of prehistory covers the time from the appearance of ''Homo sapiens'' approximately 315,000 years ago in Africa to the invention of writing, over 5,000 years ago, with the earliest records going back to 3,200 BC. Prehistory covers the time from the Paleolithic (Old Stone Age) to the beginning of ancient history. All dates are approximate and subject to revision based on new discoveries or analyses. Middle Paleolithic * 320 kya – 305 kya: Populations at Olorgesailie in Southern Kenya undergo technological improvements in tool making and engage in long-distance trade. * 315 kya: Approximate date of appearance of ''Homo sapiens'' (Jebel Irhoud, Morocco). * 270 kya: Age of Y-DNA haplogroup A00 ("Y-chromosomal Adam"). * 250 kya: First appearance of ''Homo neanderthalensis'' ( Saccopastore skulls). * 230 kya: Latest proposed date for the Terra Amata site, home of the first confirmed purpose-built structure and probably made by Homo heidelbergensis. * 230 ky ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Human History
Human history or world history is the record of humankind from prehistory to the present. Early modern human, Modern humans evolved in Africa around 300,000 years ago and initially lived as hunter-gatherers. They Early expansions of hominins out of Africa, migrated out of Africa during the Last Ice Age and had spread across Earth's continental land except Antarctica by the end of the Ice Age 12,000 years ago. Soon afterward, the Neolithic Revolution in West Asia brought the first systematic Agriculture, husbandry of plants and animals, and saw many humans transition from a nomadic life to a Sedentism, sedentary existence as farmers in Civilization, permanent settlements. The growing complexity of human societies necessitated systems of accounting and writing. These developments paved the way for the Cradle of civilization, emergence of early civilizations in Mesopotamia, Ancient Egypt, Egypt, the Indus Valley, and History of China, China, marking the beginning of the ancient ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Creation Of Writing
The history of writing traces the development of writing systems and how their use transformed and was transformed by different societies. The use of writing prefigures various social and psychological consequences associated with literacy and literary culture. Each historical invention of writing emerged from systems of proto-writing that used ideographic and mnemonic symbols but were not capable of fully recording spoken language. True writing, where the content of linguistic utterances can be accurately reconstructed by later readers, is a later development. As proto-writing is not capable of fully reflecting the grammar and lexicon used in languages, it is often only capable of encoding broad or imprecise information. Early uses of writing included documenting agricultural transactions and contracts, but it was soon used in the areas of finance, religion, government, and law. Writing allowed the spread of these social modalities and their associated knowledge, and ultima ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of Ancient History
This timeline of ancient history lists historical events of the documented ancient past from the beginning of recorded history until the Early Middle Ages. Prior to this time period, prehistory civilizations were pre-literate and did not have written language. Millennia: 4th millennium BC – 3rd millennium BC – 2nd millennium BC – 1st millennium BC – 1st millennium Centuries: 34th BC – 33rd BC – 32nd BC – 31st BC – 30th BC – 29th BC – 28th BC – 27th BC – 26th BC – 25th BC – 24th BC – 23rd BC – 22nd BC – 21st BC – 20th BC – 19th BC – 18th BC – 17th BC – 16th BC – 15th BC – 14th BC – 13th BC – 12th BC – 11th BC – 10th BC – 9th BC – 8th BC – 7th BC – 6th BC – 5th BC – 4th BC – 3rd BC – 2nd BC – 1st BC – 1st AD – 2nd AD – 3rd AD – 4th AD — 5th AD Early history *Late 4th millennium BC: Sumerian cuneiform writing system"Beginning in the pottery-phase of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of Post-classical History
The following is a timeline of major events in post-classical history from the 5th to 15th centuries, loosely corresponding to the Old World Middle Ages, intermediate between Late antiquity and the early modern period. Overview This timetable gives a basic overview of states, cultures and events which transpired roughly between the years 200 and 1500. Sections are broken by political and geographic location. Europe ImageSize = width:1000 height:435 PlotArea = width:720 height:385 left:65 bottom:20 AlignBars = justify Colors = id:time value:rgb(0.17,0.81,1) # id:period value:rgb(1,0.7,0.5) # id:span value:rgb(0.9,0.8,0.5) # id:age value:rgb(0.95,0.85,0.5) # id:era value:rgb(1,0.85,0.15) # id:eon value:rgb(1,0.85,0.7) # id:filler value:gray(0.8) # background bar id:black value:black Period = from:200 till:1500 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:100 start:200 ScaleMinor = unit:year increment:10 start:200 Pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timelines Of Modern History
The following are timelines of modern history, from the end of the Middle Ages, ,Encyclopedia BritannicaThe Middle-Ages Retrieved October 14, 2020 to the present. Overview Europe ImageSize = width:900 height:600 PlotArea = width:720 height:550 left:80 bottom:20 AlignBars = justify Colors = id:time value:rgb(0.7,0.7,1) # id:period value:rgb(1,0.7,0.5) # id:age value:rgb(0.95,0.85,0.5) # id:era value:rgb(1,0.85,0.5) # id:eon value:rgb(1,0.85,0.7) # id:filler value:gray(0.8) # background bar id:black value:black Period = from:1450 till:1850 TimeAxis = orientation:horizontal ScaleMajor = unit:year increment:100 start:1450 ScaleMinor = unit:year increment:10 start:1450 PlotData = align:center textcolor:black fontsize:8 mark:(line,black) width:20 shift:(0,-5) bar:Timeframe color:era from:1500 till:1800 text:Early modern period bar:Timeframe color:filler from:1450 till:1500 text:Late Middle Ages from:1800 till:1850 text: Late modern per ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timelines Of The Future ...
There are some articles regarding this topic: * 3rd millennium, up to the year 3000 * Timeline of the far future, events beyond the year 3000 * List of future calendar events * List of future astronomical events Fictional timelines * List of stories set in a future now in the past * Timeline of Star Trek – science fiction television series, later expanded to other media. {{Set index article * future The future is the time after the past and present. Its arrival is considered inevitable due to the existence of time and the laws of physics. Due to the apparent nature of reality and the unavoidability of the future, everything that currently ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ChronoZoom
ChronoZoom is a free open source project that visualizes time on the broadest possible scale from the Big Bang to the present day. Conceived by Walter Alvarez and Roland Saekow and developed by the department of Earth and Planetary Science at the University of California, Berkeley, in collaboration with Microsoft Research and Moscow State University, Alvarez unveiled the first ChronoZoom prototype at UC Berkeley's 2010 Faculty Research Lecture. Although that demo is no longer available to the public online, a second version rewritten in HTML5 is now available and open source. ChronoZoom was inspired by the study of Big History, and it approaches the documentation and visualization of time and history in the same way that Google Earth deals with geography. ChronoZoom allows users to see the true scale of time over cosmic, geologic, biological and social periods. Purpose The primary goal of ChronoZoom is to make time relationships between different studies of history clear and viv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
