Mathematics is visible everywhere in nature, even where we are not expecting it. It can help explain the way galaxies spiral, a seashell curves, patterns replicate, and rivers bend.
Mathematics
May 20, 2020
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(PhysOrg.com) -- A $25 computer targeted to help young people learn about computers beyond uploading pics and downloading documents is about to start volume-production in January. The Raspberry Pi project, a UK-based foundation, ...
(Phys.org)—Computational Engineers at the University of Southampton have built a supercomputer from 64 Raspberry Pi computers and Lego.
Computer Sciences
Sep 11, 2012
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A team at Google Creative Lab recently turned to the $35 Raspberry Pi, the little machine that helps to teach kids how computers work. Talking about it led to what people at the Lab do best, and that is hatch. Raspberry Pi, ...
(PhysOrg.com) -- A computer scientist in France has broken all previous records for calculating Pi, using only a personal computer. The previous record was approximately 2.6 trillion digits, but the new record, set by Fabrice ...
After thousands of years of trying, mathematicians are still working out the number known as pi or "Ï€". We typically think of pi as approximately 3.14 but the most successful attempt to calculate it more precisely worked ...
Mathematics
Mar 14, 2016
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Over the past few days, the mathematics world has been abuzz over the news that Sir Michael Atiyah, the famous Fields Medalist and Abel Prize winner, claims to have solved the Riemann hypothesis.
Mathematics
Sep 28, 2018
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Australian researchers have done the impossible -- they’ve found the sixty-trillionth binary digit of Pi-squared! The calculation would have taken a single computer processor unit (CPU) 1,500 years to calculate, but ...
Mathematics
Apr 29, 2011
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Swiss researchers said Monday they had calculated the mathematical constant pi to a new world-record level of exactitude, hitting 62.8 trillion figures using a supercomputer.
Mathematics
Aug 17, 2021
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A pair of Japanese and US computer whizzes claim to have calculated pi to five trillion decimal places -- a number which if verified eclipses the previous record set by a French software engineer.
Mathematics
Aug 5, 2010
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The piano is a musical instrument played by means of a keyboard. It is one of the most popular instruments in the world. Widely used in classical and jazz music for solo performances, ensemble use, chamber music and accompaniment, the piano is also very popular as an aid to composing and rehearsal. Although not portable and often expensive, the piano's versatility and ubiquity have made it one of the world's most familiar musical instruments.
Pressing a key on the piano's keyboard causes a felt-covered hammer to strike steel strings. The hammers rebound, allowing the strings to continue vibrating at their resonant frequency. These vibrations are transmitted through a bridge to a sounding board that more efficiently couples the acoustic energy to the air. The sound would otherwise be no louder than that directly produced by the strings. When the key is released, a damper stops the string's vibration. See the article on Piano key frequencies for a picture of the piano keyboard and the location of middle-C. In the Hornbostel-Sachs system of instrument classification, pianos are considered chordophones.
The word piano is a shortened form of pianoforte, the Italian word for the instrument (which in turn derives from the previous terms "gravicembalo col piano e forte" and fortepiano). The musical terms "piano" and "forte" mean "quiet" and "loud," and in this context refers to the variations in volume of sound the instrument produces in response to a pianist's touch on the keys: the greater a key press's velocity, the greater the force of the hammer hitting the string(s), and the louder the note produced.
This text uses material from Wikipedia, licensed under CC BY-SA
