Tuesday, 30 July 2013

HD 189733: An Eclipsing Exoplanet Seen In X-rays For First Time

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HD 189733: An Eclipsing Exoplanet Seen In X-rays For First Time
Friday, 12 July 2013

Chords in trigonometry

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Source: Wikipedia. Chords were used extensively in the early development of  trigonometry . The first known trigonometric table, compil...
Tuesday, 18 June 2013

Pendolo fisico , piccole oscillazioni

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Moti alternati

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Dal Progetto Glues del Prof. M. Baronti http://www.diptem.unige.it/baronti/GLUES/Glues_negli%20anni.htm Adattato dal progetto sul moto al...

The Remarkable Properties of Mythological Social Networks | MIT Technology Review

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"Today,  P J Miranda at the Federal Technological University of Paraná in Brazil and a couple of pals study the social network between ...
Monday, 17 June 2013

Festival Beethoven

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Dal 24 al 30 giugno 2013, Piazza San Carlo Le 9 Sinfonie con l’Orchestra Sinfonica Nazionale della RAI e il Coro del Teatro Regio. I Concert...
Friday, 14 June 2013

Moving sand dunes on the Google Earth

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Several methods exist for surveying the dunes and estimate their migration rate. Among methods suitable for the macroscopic scale, the use o...
Thursday, 13 June 2013

Positive or negative? Nanoparticle surface charge affects cell-membrane interactions - physicsworld.com

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Positive or negative? Nanoparticle surface charge affects cell-membrane interactions - physicsworld.com

Monopoles unwind magnetic whorls - physicsworld.com

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Monopoles unwind magnetic whorls - physicsworld.com

Bob e Joe, lavavetri

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Two window washers, Bob and Joe, are on a 3.00-m-long, 345-N scaffold supported by two cables attached to its ends. Bob weighs 750 N and st...