Saturday, May 01, 2021
The Physician
Monday, April 05, 2021
The National Aeronautics and Space Administration
NASA is an independent agency of the U.S. federal government responsible for the civilian space program, as well as aeronautics and space research. NASA was established in 1958, succeeding the National Advisory Committee for Aeronautics (NACA). The new agency was to have a distinctly civilian orientation, encouraging peaceful applications in space science. Since its establishment, most US space exploration efforts have been led by NASA, including the Apollo Moon landing missions, the Skylab space station, and later the Space Shuttle.
Monday, March 08, 2021
The bat
Bats are mammals of the order Chiroptera. With their forelimbs adapted as wings, they are the only mammals capable of true and sustained flight. Bats are more manoeuvrable than birds, flying with their very long spread-out digits covered with a thin membrane or patagium. The smallest bat, and arguably the smallest extant mammal, is Kitti's hog-nosed bat, which is 29-34 millimetres (1 1/8-1 3/8 inches) in length, 150 mm (6 in) across the wings and 2-2.6 g (1/16-3/32 oz) in mazz.
Bats provide humans with some direct benefits, at the cost of some disadvantages. On the befefits side, bat dung has been and in may places still is mined as guano from caves and used as fertiliser. Bats consume insect pests, reducing the need for pesticides and other insect management measures. They are sometimes numerous enough and close enough to human settlements to serve as tourist attractions, and they are used as food across Asia and the Pacific Rim.
On the disadvantages side, fruit bats are frequently considered pests by fruit growers. Due to their physiology, bats are one type of animal that acts as a natural reservoir of many pathogens, such as rabies; and since they are highly mobile, social, and long-lived, they can readily spread disease among themselves. If humans interact with bats, these traits become potentially dangerous to humans. Depending on the culture, bats may be symbolically associated with positive traits, such as protection from certain diseases or risks, rebirth, or long life, but in the West, bats are popularly associated with darkness, malevolence, withcraft, vampires, and death...
Sunday, February 14, 2021
The real Queen's Gambit
The Queen's Gambit is the chess opening that starts with the moves:
1. d4 d5
2. c4
It is one of the oldest opening and is still commonly played today. It is traditionally described as a gambit because White appears to sacrifice the c-pawn; however, this could be considered a misnomer as Black cannot retain the pawn without incurring a disadvantage. Also, this kind of opening is one of the oldest known in chess. It was mentioned in the Göttingen manuscript of 1490 and was later analyzed by Gioachino Greco in the 17th century. In the 18th century, it was recommended by Philipp Stamma and is sometimes known as the "Aleppo Gambit" on his honor. During the early period of modern chess, queen pawn openings were not in fashion, and the Queen's Gambit did not become commonplace until the 1873 tournament in Vienna.
After 1. d4 d5 2. c4:
2...e6 (Queen's Gambit Declined or QGD). This is the main line, with many variations.
2...dxc4 (Queen's Gambit Accepted or QGA). Less popular than the QGD, it nevertheless has a solid reputation.
2...c6 (Slav Defense). This is a solid response, although many variations are very tactical.
2...e5 (Albin Countergambit). A sharp attempt by Black to gain the initiative.
2...Nc6 (Chigorin Defense). It takes the game away from the normal positional channels of the QGD and has been favored by Alexamder Morozevich at the top level; it appears to be playable for Black.
2...Bf51!? (Baltic Defense). It is an offbeat but playable line.
2...c5 (Symmetrical Defense). This is rarely played; although it has not been definitely refuted, the play seems to favor White.
2...Nf6?! (Marshall Defense). It named after Frankk Marshall, who first devised the move, he briefly played it in the 1920s before abandoning it.
2...g6?! (Alekhine idea). White can gain the advantage by 3. cxd5 Qxd5 (3...Nf6 4. Qa4 +/-) 4. Nc3 Qa5 5. Nf3 Bg7 6. Bd2 c6 7. e4 Qb6 8. Bc4! Bxd4 9. Nxd4 Qxd4 10. Qb3 Qg7 11. 0-0 +/- (Minev).
Sunday, January 03, 2021
Budapest
Budapest is the capital and the most populous city of Hungary, and the ninth-largest city in the European Union by population within city limits. The city has an estimated population of 1.752.286 over a land area of about 525 square kilometres (203 square miles). Budapest is both a city and county, and forms the centre of the Budapest metropolitan area, which has an area of 7.626 square kilometres (2.944 square miles) and a population of 3.303.786 comprising 33% of the population of Hungary.
Sunday, December 06, 2020
The Queen's Gambit (Netflix)
The Qeen's Gambit is an American coming-of-age period drama streaming television miniseries based on Walter Tevis's 1983 novel of the same name, created for Netflix by Scott Frank and Allan Scott, and written and directed by the former. Beginning mid-1950s and proceeding into the 1960s, the story is about an orphaned chess prodigy on her rise to becoming the world's greatest chess player while struggling with emotional problems and drug and alcohol dependency.
Anya Taylor-Joy as Beth Harmon.
Bill Camp as Mr. Shaibel.
Thomas Brodie-Sangster as Benny Watts.
Marcin Dorocinski as Vasily Borgov.
Sunday, November 08, 2020
Pandemic
A pandemic is a epidemic of an infectious disease that has spread across a large region, for instance multiple continents or worldwide, affecting a substantial number of people. A widespread endemic disease with a stable number of infected people is not a pandemic. Widespread endemic diseases with a stable number of infected people such as recurrences of seasonal influenza are generally excluded as they occur simultaneously in large regions of the globe rather than being spread worldwide.