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Introduction References & Edit History Related Topics

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Block and tackle

simple machines

What is a simple machine?

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History of Technology Timeline

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Molecular Machines: Making for the Future

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How Does Wi-Fi Work?

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Flags That Look Alike

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12 Novels Considered the “Greatest Book Ever Written”

Rural Irish landscape, Sligo, Ireland.

Why Is Ireland Two Countries?

Iraqi Army Soldiers from the 9th Mechanized Division learning to operate and maintain M1A1 Abrams Main Battle Tanks at Besmaya Combat Training Center, Baghdad, Iraq, 2011. Military training. Iraq war. U.S. Army

8 Deadliest Wars of the 21st Century

A human Inuit skull in a stone chambered cairn in Ilulissat in Greenland. These ancient graves are pre christian and are at least 2000

14 Tough Questions Answered

Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.

10 Famous Artworks by Leonardo da Vinci

Thanksgiving Turkey with all the sides

Why Do We Eat Turkey on Thanksgiving?

pulley: Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

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Block and tackle

simple machines

What is a simple machine?

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Key People

Sir Marc Isambard Brunel

Sir Marc Isambard Brunel

French-British engineer