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The dates for each age can vary by region. On the geologic time scale, the Holocene epoch starts at the end of the last glacial period of the current ice age (c. 10,000 BC) and continues to the present. The beginning of the Mesolithic is usually considered to correspond to the beginning of the Holocene epoch
The brief period of time during which a body of water susceptible to tides is completely unstressed because the tidal stream is almost still, i.e. there is no movement in either direction in the tidal current, usually the period immediately before and after the high and low water marks, prior to the tide reversing direction. slant range
Eras cannot easily be defined. 1500 is an approximate starting period for the modern era because many major events caused the Western world to change around that time: from the fall of Constantinople (1453), Gutenberg's moveable type printing press (1450s), completion of the Reconquista (1492) and Christopher Columbus's voyage to the Americas ...
Also amphidrome and tidal node. A geographical location where there is little or no tide, i.e. where the tidal amplitude is zero or nearly zero because the height of sea level does not change appreciably over time (meaning there is no high tide or low tide), and around which a tidal crest circulates once per tidal period (approximately every 12 hours). Tidal amplitude increases, though not ...
It has also been suggested that the end of that second cold period [4] was responsible for the subsequent Cambrian explosion, a time of rapid diversification of multi-cellular life during the Cambrian Period. The hypothesis is still controversial, [5] [6] though is gaining credence among researchers, as evidence in its favour has mounted. [7]
The early modern period is a subdivision of the most recent of the three major periods of European history: antiquity, the Middle Ages and the modern period. The term "early modern" was first proposed by medieval historian Lynn Thorndike in his 1926 work A Short History of Civilization as a broader alternative to the Renaissance.
J. H. Parry, calling the period the Age of Reconnaissance, argues that not only was the era one of European explorations, but it also produced the expansion of geographical knowledge and empirical science. "It saw also the first major victories of empirical inquiry over authority, the beginnings of that close association of science, technology ...
In some English accents, the phoneme /l/, which is usually spelled as l or ll , is articulated as two distinct allophones: the clear [l] occurs before vowels and the consonant /j/, whereas the dark [ɫ] / [lˠ] occurs before consonants, except /j/, and at the end of words.