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Angular velocity is equal to the circumference (2 pi r) times the frequency; if whirling a mass around in a horizontal circle, can find the radius of the circle by (length of string x sinangle), then use the above equation


Hype is an omni-directional, compact, hi-fi speaker that packs a powerful punch despite being so simple!

from the Guardian

Blurred lines: Josef Albers’ rare black and white drawings – in pictures

Study for Graphic Tectonic, c 1942. Photograph: Josef and Anni Albers Foundation/Artists Rights Society/Dacs


alternating current: current amplitude as a function of angular frequency [Credit: Courtesy of the Department of Physics and Astronomy, Michigan State University]