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In 1973, the scale was introduced to the general public, [5] and saw widespread use after Neil Frank replaced Simpson at the helm of the NHC in 1974. [6] The scale was created by Herbert Saffir, a structural engineer, who in 1969 was commissioned by the United Nations to study low-cost housing in hurricane-prone areas. [7]
The Gaza war [p] has been fought between Israel and Hamas-led Palestinian militant groups [q] in the Gaza Strip and Israel since 7 October 2023. The fifth war since 2008 in the Gaza–Israel conflict, it is the most significant military engagement in the region since the Yom Kippur War in 1973, [74] and sparked an ongoing Middle Eastern crisis.
The Mohs scale is an ordinal scale. For example, corundum (9) is twice as hard as topaz (8), but diamond (10) is four times as hard as corundum. [ citation needed ] The table below shows the comparison with the absolute hardness measured by a sclerometer , with images of the reference minerals in the rightmost column.
Chart of the time-averaged census for large-bodied dinosaurs from the entire Hell Creek Formation in the study area According to studies published in 2021 by Charles Marshall et al., the total population of adult Tyrannosaurus at any given time was perhaps 20,000 individuals, with computer estimations also suggesting a total population no lower ...
In a 1997 study, [49] exploratory factor analysis (EFA) of a thirteen-item scale showed there were two particularly important levels of needs in the US during the peacetime of 1993 to 1994: survival (physiological and safety) and psychological (love, self-esteem, and self-actualization). In 1991, a retrospective peacetime measure was ...
Delegation of the Northern Kingdom of Israel, bearing gifts to the Assyrian ruler Shalmaneser III, c. 840 BCE, on the Black Obelisk, British Museum. The scriptural basis for the idea of lost tribes is 2 Kings 17:6: "In the ninth year of Hoshea, the king of Assyria took Samaria, and carried Israel away unto Assyria, and placed them in Halah, and in Habor, on the river of Gozan, and in the ...
Zheng He (also romanized Cheng Ho; 1371–1433/1435) was a Chinese admiral, explorer, diplomat, and bureaucrat during the early Ming dynasty (1368–1644). He is often regarded as the greatest admiral in Chinese history.