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Muslim Scientists and Thinkers — Abu al Tz ibn Razaz al-Jazari

Al-Jazari was a rare genius who mastered the science of mechanical engineering at an early age. He was also a scholar, artist, inventor, astronomer and craftsman.

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August 14, 2008

Jackhammers

A pneumatic drill or jackhammer is a portable percussive drill powered by compressed air. It is used to drill rock, break up pavement, and more. It works like a hammer and chisel, by jabbing with its bit, not rotating.

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August 7, 2008

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