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Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, and into the future. [1] [2] [3] It is a component quantity of various measurements used to sequence events, to compare the duration of events or the intervals between them, and to quantify rates of change of quantities in material reality or in the ...
The date used as the end of the ancient era is arbitrary. The transition period from Classical Antiquity to the Early Middle Ages is known as Late Antiquity.Late Antiquity is a periodization used by historians to describe the transitional centuries from Classical Antiquity to the Middle Ages, in both mainland Europe and the Mediterranean world: generally from the end of the Roman Empire's ...
e. Contemporary history, in English-language historiography, is a subset of modern history that describes the historical period from about 1945 to the present. [1] In the social sciences, contemporary history is also continuous with, and related to, the rise of postmodernity. Contemporary history is politically dominated by the Cold War (1947 ...
t. e. 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.
Chronology of the Bible. The chronology of the Bible is an elaborate system of lifespans, ' generations ', and other means by which the Masoretic Hebrew Bible (the text of the Bible most commonly in use today) measures the passage of events from the creation to around 164 BCE (the year of the re-dedication of the Second Temple).
Time series. In mathematics, a time series is a series of data points indexed (or listed or graphed) in time order. Most commonly, a time series is a sequence taken at successive equally spaced points in time. Thus it is a sequence of discrete-time data. Examples of time series are heights of ocean tides, counts of sunspots, and the daily ...
Volatility (finance) In finance, volatility (usually denoted by "σ") is the degree of variation of a trading price series over time, usually measured by the standard deviation of logarithmic returns. Historic volatility measures a time series of past market prices. Implied volatility looks forward in time, being derived from the market price ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 23 September 2024. Period of European history (about 800–1050) Viking Age picture stone, Gotland, Sweden. Part of a series on Scandinavia Countries Denmark Finland Iceland Norway Sweden History History by country Åland Denmark Faroe Islands Finland Greenland Iceland Norway Scotland Sweden ...