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Ḥasan Ibn al-Haytham (Latinized as Alhazen; / æ l ˈ h æ z ən /; full name Abū ʿAlī al-Ḥasan ibn al-Ḥasan ibn al-Haytham أبو علي، الحسن بن الحسن بن الهيثم; c. 965 – c. 1040) was a medieval mathematician, astronomer, and physicist of the Islamic Golden Age from present-day Iraq.
Bulan dan mek ( Thai: บุหลันดั้นเมฆ, pronounced [bū.lǎn dân mêːk]) is one of the traditional Thai desserts inspired by royal songs in the reign of King Rama II of Chakri Dynasty, 1767-1824. It is a small dessert in which the center is a circular dimple with a yellow color and a bluish-purple surrounding skin.
The song was a traditional folk song adapted from the popular French melody of La Rosalie. [ 1] Following the popularity of the French melody, it became a popular Indonesian folk song as well as for Malays at parties and cabarets in the Malay Peninsula from the 1920s to the 1930s. Since the independence of the Federation of Malaya in 1957 ...
Bulanids. The Bulanids were the ruling dynasty of the Khazar Khaganate during the 9th century and 10th century CE. The dynasty is named after Bulan, who may or may not have been its founder. In other sources (see Schechter Letter ), the founder of the dynasty is named Sabriel. Whether the Bulanid rulers were Beks or Khagans is a matter of some ...
Bulan was a Khazar king who led the conversion of the Khazars to Judaism. His name means "elk" [ 1] or "hart" in Old Turkic. The date of his reign is unknown, as the date of the conversion is hotly disputed, though it is certain that Bulan reigned some time between the mid-8th and the mid-9th centuries. Nor is it settled whether Bulan was the ...
The lunar distance is on average approximately 385,000 km (239,000 mi), or 1.28 light-seconds; this is roughly 30 times Earth's diameter or 9.5 times Earth's circumference. Around 389 lunar distances make up an AU astronomical unit (roughly the distance from Earth to the Sun). Lunar distance is commonly used to express the distance to near ...
The orbit of the Moon is a nearly circular ellipse about the Earth (the semimajor and semiminor axes are 384,400 km and 383,800 km, respectively: a difference of only 0.16%). The equation of the ellipse yields an eccentricity of 0.0549 and perigee and apogee distances of 362,600 km (225,300 mi) and 405,400 km (251,900 mi) respectively (a ...
Earth's orbit. Earth orbits the Sun at an average distance of 149.60 million km (92.96 million mi), or 8.317 light-minutes, [ 1] in a counterclockwise direction as viewed from above the Northern Hemisphere. One complete orbit takes 365.256 days (1 sidereal year ), during which time Earth has traveled 940 million km (584 million mi). [ 2]