pendulum
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pendulum

A fresco dating from 1841 in the Observatory Academy, Florence, Italy, which shows the 17-year-old Italian mathematician and astronomer Galileo contemplating a swinging lamp in Pisa Cathedral, and coming to the realization that each swing, long or short, takes the same time. It was only at the end of his life, nearly blind, that Galileo returned to the notion of a pendulum's regularity, and considered its application to clocks.

Weight (called a ‘bob’) swinging at the end of a rod or cord. The regularity of a pendulum's swing was used in making the first really accurate clocks in the 17th century. Pendulums can be used for measuring the acceleration due to gravity (an important constant in physics).

Specialized pendulums are used to measure velocities (ballistic pendulum) and to demonstrate the Earth's rotation (Foucault's pendulum).

For the use of a pendulum in parapsychology, see dowsing.

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1851 Bowie, William Bullard, Edward Crisp Campbell-Bannerman, Henry China clock dowsing Eco, Umberto energy fax force Foucault, Léon free trade function Galileo Harrison, John Huston, Scott Huygens, Christiaan Invar			The simple pendulum is said to date back to China, sometime in two hundred AD The simple pendulum is said to date back to China, sometime in two hundred A. A Brief History of Pendulum Clocks by Mike O'Brien / Ethnic, cultural, racial issues community We compare the cycloidal pendulum with the simple pendulum. A huygens pendulum by Adkins, Ancil; Kapranidis, Stelios; Koo, Reginald / Bulletin of the South Carolina Academy of Science Thus began Galileo's discovery of isochronism of the simple pendulum, which would revolutionize timekeeping. Galileo's Pendulum: From the rhythm of time to the making of matter by Science News			Simon, Herbert Alexander Simon, John Simon, Jules François Simon, Neil Simon, Norton Simon, Paul Simon, Richard Simon, William Simon, Yves Simonds, Ossian Cole Simone del Pollaiuolo Simone Martini Simone, Nina Simoneau, Léopold Simonetti, Achille Simonides Simonov, Yuri Simonstown simony simple harmonic motion simple intervals Simple Mail Transfer Protocol Simple Minds simple molecular structure Simple Network Management Protocol simple pendulum simple tense simple time simplify Simplon Pass Simpson Desert Simpson, Alan K Simpson, Christopher Simpson, George Clark Simpson, George Gaylord Simpson, Jessica Simpson, Joanne Malkus Simpson, John Simpson, N F Simpson, O J Simpson, Robert Simpson, Thomas Simpson, Tommy Simpsonville Sims, James Marion Sims, William Sowden Simsbury Simson, Robert simulation Simuliidae simultaneous equations			Simple Object Access Protocol Simple Object Access Protocol - Routing Protocol Simple Object Access Protocol - Security Extensions: Digital Signature Simple Object Database Access Simple Object Definition Language Simple Object-Oriented Programming Simple obligation Simple obligation Simple Odd Parity Code Simple Office Solutions Simple Offline USENET Simple Omnibus Format in Text Simple Operating System for Smartcard Education Simple Optic Nerve Atrophy simple order simple ore simple oscillator Simple Packet Relay Transport Simple partial seizure Simple partial seizure Simple partial seizure Simple partial seizure Simple partial seizure Simple Password Exponential Key Exchange Simple past Simple past tense Simple path Simple path Simple Payback Simple Payback Period simple pendulum simple periodontal pocket simple phobia simple phobia simple phobia simple phobia simple phobia Simple Picture Gallery Manager Simple PIE Simple Pieces of Cloth simple pistil simple pistil simple pit Simple Plan Simple Plant Location Problem Simple Plastic Airplane Design simple point Simple Polygon Processor simple polyhedron Simple Portable Simulation Language Simple Power Analysis Simple prebend Simple Pressure Vessels Directive Simple Procedures Online for Cross-Border Services Simple Profile Simple programmable logic device Simple Programming Language Simple Project Management System Simple prospect Simple Prospects

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pendulum (redirected from simple pendulum)

pendulum

pendulum
(redirected from simple pendulum)