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1 day ago · A simple chart for classifying the main star types using Harvard classification In astronomy , stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with spectral lines .
2 hours ago · The Ming dynasty ( / mɪŋ / MING ), [7] officially the Great Ming, was an imperial dynasty of China, ruling from 1368 to 1644 following the collapse of the Mongol -led Yuan dynasty. The Ming dynasty was the last imperial dynasty of China ruled by the Han people, the majority ethnic group in China. Although the primary capital of Beijing fell ...
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2 hours ago · Among people who use the Internet, the figures have been startling. Research findings show that the most popular weekly online activities for consumers in the US (as of January 2022) are video streaming (18.9 hours), online gaming (16.8 hours), streaming music (14.2 hours), video calls for work (9.1 hours), online shopping (8.1 hours), online dating (7.5 hours), and virtual appointments (5.2 ...
2 hours ago · In a recent publication by Tchaïné , it was noted that the most widespread language of instruction is French, since 84.3% of teachers use it as their medium, compared to only 6.3% who teach in Arabic and 9.4% who are bilingual, according to the 2020–2021 statistical yearbook of the Ministry of National Education. The educational system is thus dominated by the development of the French ...
1 day ago · 2,000,000–4,500,000 displaced, [13] 500,000 of whom fled abroad [14] The Nigerian Civil War (6 July 1967 – 15 January 1970), also known as the Biafran War, was a civil war fought between Nigeria and the Republic of Biafra, a secessionist state which had declared its independence from Nigeria in 1967. Nigeria was led by General Yakubu Gowon ...
