Santos Dumont | |
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Alberto Santos-Dumont (Portuguese pronunciation: [awˈbɛɾtu ˈsɐ̃tus duˈmõ]; 20 July 1873 – 23 July 1932) was a Brazilian inventor and aviation pioneer, one of the very few people to have contributed significantly to the development of both lighter-than-air and heavier-than-air aircraft.
The heir of a wealthy family of coffee producers, Santos-Dumont dedicated himself to aeronautical study and experimentation in Paris, where he spent most of his adult life.
In his early career he designed, built, and flew hot air balloons and early dirigibles, culminating in his winning the Deutsch de la Meurthe prize on 19 October 1901 for a flight that rounded the Eiffel Tower.
He then turned to heavier-than-air machines, and on 23 October 1906 his 14-bis made the first powered heavier-than-air flight in Europe to be certified by the Aéro-Club de France and the Fédération Aéronautique Internationale.
Riyadh | |
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Riyadh (Arabic: الرياض, romanized: ar-Riyāḍ, lit. 'The Gardens' [ar.riˈjaːdˤ] Najdi pronunciation: [er.rɪˈjɑːðˤ]) is the capital of Saudi Arabia and the largest city on the Arabian Peninsula. Located in the center of the an-Nafud desert, on the eastern part of the Najd plateau, the city sits at an average of 600 metres (2,000 ft) above sea level, and receives more than 16 million tourists each year, making it the 2nd most visited city in the Arab world. Riyadh had a population of 7.6 million people in 2019, making it the most populous city in Saudi Arabia, 2nd most populous in the Arab world (after Cairo), and 38th most populous in Asia.The first mentioning of the city by the name Riyadh was in 1590, by an early Arab chronicler. In 1737, Deham Ibn Dawwas, who was from the neighboring Manfuha, settled in and took control of the city. Deham built a wall around the city, and the best known source of the name Riyadh is from this period, thought to be referring to the earlier oasis towns that predated the wall built by Ibn Dawwas. In 1744, Muhammad ibn 'Abd al-Wahhab formed an alliance with the Emir of Dir'iyah, Muhammad bin Saud, and in 1774, they took Riyadh from Deham. However their state, now known as the First Saudi State, came to a collapse in 1818. Turki ibn Abdullah founded the Second Saudi State in the early 19th century and made Riyadh his capital in 1825. However, his reign over the city was disrupted by a joint Ottoman–Rashidi alliance. Finally, in the early 20th century, 'Abdulaziz ibn Saud, known in the west simply as Ibn Saud, retrieved his ancestral kingdom of Najd in 1902 and consolidated his rule by 1926 with the final Saudi conquest of Hejaz. After this he named his kingdom Saudi Arabia in September 1932 with Riyadh as the capital.Riyadh is the political and administrative centre of Saudi Arabia.
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