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Chronology. Chronology (from Latin chronologia, from Ancient Greek χρόνος, chrónos, "time"; and -λογία, -logia) [2] is the science of arranging events in their order of occurrence in time. Consider, for example, the use of a timeline or sequence of events. It is also "the determination of the actual temporal sequence of past events".
Geologic time scale. The geologic time scale, proportionally represented as a log-spiral with some major events in Earth's history. A megaannus (Ma) represents one million (10 6) years. The geologic time scale or geological time scale ( GTS) is a representation of time based on the rock record of Earth. It is a system of chronological dating ...
Chronological dating, or simply dating, is the process of attributing to an object or event a date in the past, allowing such object or event to be located in a previously established chronology. This usually requires what is commonly known as a "dating method". Several dating methods exist, depending on different criteria and techniques, and ...
Iron Age Roman. Sub-Saharan Africa Sub-Saharan Africa: Earlier Stone Age. Middle Stone Age Later Stone Age Neolithic c. 4000 BCE Bronze Age (3500 – 600 BCE) Iron Age (550 BC – 700 CE) Classic Middle Ages (c. 700 – 1700 CE) Asia Near East Levantine: Stone Age (2,000,000 – 3300 BCE) Bronze Age (3300 – 1200 BCE) Iron Age (1200 – 586 BCE)
Geologic Time – Period prior to humans. 4.6 billion to 3 million years ago. (See "prehistoric periods" for more detail into this.) Primatomorphid Era – Period prior to the existence of Primatomorpha. Simian Era – Period prior to the existence of Simiiformes. Hominoid Era – Period prior to the existence of Hominoidea.
Mental age is a concept related to intelligence. It looks at how a specific individual, at a specific age, performs intellectually, compared to average intellectual performance for that individual's actual chronological age (i.e. time elapsed since birth). The intellectual performance is based on performance in tests and live assessments by a ...
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.
none (unique language) 1943–45. Plankalkül (year of conceptualization) Konrad Zuse. none (unique language) 1943–46. ENIAC coding system. John von Neumann, John Mauchly, J. Presper Eckert and Herman Goldstine after Alan Turing. The first programmers of ENIAC were Kay McNulty, Betty Jennings, Betty Snyder, Marlyn Meltzer, Fran Bilas, and ...