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János Bolyai; artwork by Attila Zsigmond [1] Memorial plaque of János Bolyai in Olomouc, Czech Republic. János Bolyai (/ ˈ b ɔː l j ɔɪ /; [2] Hungarian: [ˈjaːnoʃ ˈboːjɒi]; 15 December 1802 – 27 January 1860) or Johann Bolyai, [3] was a Hungarian mathematician who developed absolute geometry—a geometry that includes both Euclidean geometry and hyperbolic geometry.
[1] [2] Free ? Gresham College: IRIS Consortium: Multidisciplinary Educational Earth-science videos, animations, lessons for educators. Animations/videos have been reviewed and evaluated by scientists/specialists in the specific discipline. Free Creative Commons Attribution-NonCommercial-ShareAlike [3] IRIS Consortium: iTunesU: Multidisciplinary
In computing, the modulo operation returns the remainder or signed remainder of a division, after one number is divided by another, called the modulus of the operation.. Given two positive numbers a and n, a modulo n (often abbreviated as a mod n) is the remainder of the Euclidean division of a by n, where a is the dividend and n is the divisor.
In computer networks, download means to receive data from a remote system, typically a server [1] such as a web server, an FTP server, an email server, or other similar systems. This contrasts with uploading, where data is sent to a remote server. A download is a file offered for downloading or that has been downloaded, or the process of ...
The luminance carrier was shifted from 4.2 MHz for regular 8-mm up to 5.7 MHz for Hi8, and the frequency deviation was increased to 2 MHz from the 1.2 MHz of standard 8-mm. Like S-VHS, Hi8 was officially rated at a luminance resolution of 400 lines , [ 12 ] a vast improvement from their respective base formats and are roughly equal to LaserDisc ...
For example, the batik of Cirebon has a fractal dimension of 1.1; the batiks of Yogyakarta and Surakarta (Solo) in Central Java have a fractal dimension of 1.2 to 1.5; and the batiks of Lasem on the north coast of Java and of Tasikmalaya in West Java have a fractal dimension between 1.5 and 1.7. [86]
A page from The Compendious Book on Calculation by Completion and Balancing by Al-Khwarizmi. Mathematics during the Golden Age of Islam, especially during the 9th and 10th centuries, was built upon syntheses of Greek mathematics (Euclid, Archimedes, Apollonius) and Indian mathematics (Aryabhata, Brahmagupta).
Venera 1 was a 643.5-kilogram (1,419 lb) probe consisting of a cylindrical body 1.05 metres (3 ft 5 in) in diameter topped by a dome, totalling 2.035 metres (6 ft 8.1 in) in height. This was pressurized to 1.2 standard atmospheres (120 kPa) with dry nitrogen, with internal fans to maintain even distribution of heat.