Museum of the Human Inventions
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MHI 021 · Exhibition

The Water Wheel

c. 3rd century BCE onward

Approximate date

The eastern Mediterranean, later across Europe and Asia

Associated with

Greek and Roman engineers
Described and built early water mills; individual inventors are not named with certainty

Plate 021

c. 3rd century BCE onward

The eastern Mediterranean, later across Europe and Asia

No photograph is shown for this exhibition. The museum displays an image only where it can show the object honestly.

About this date

Greek writers such as Philo of Byzantium describe water-driven mechanisms in the 3rd century BCE. The Roman engineer Vitruvius describes water-driven mills in the 1st century BCE.

About credit

The device appears in written sources from the Hellenistic and Roman world. Similar machines developed independently in China.

Chapter I

The world before

Life before the Water Wheel

Grinding grain was hard manual work, done by hand with querns or by animals turning millstones.

The human achievement

How it came about

Engineers set a wheel into a stream, with paddles or buckets catching the current. Gears carried the rotation to a millstone. By the Middle Ages, water power drove mills across Europe, and Domesday Book (1086) records thousands of mills in England.

Understanding the invention

How it works

The Water Wheel, explained in two steps.

Step 01 of 02

Capturing a flowing force

Water pushing on the paddles (or falling into buckets) turns the wheel.

IV

The transformation

What changed for humanity

  1. Food

    Flour milling became faster, cheaper and less laborious.

  2. Industry

    Water power drove sawmills, forges, fulling mills and, eventually, textile factories.

It was the first widely used non-muscle power source. For two thousand years it ground grain, sawed wood, hammered iron and powered early factories.

Before and after

Life before and after The Water Wheel

Before

Hours of hand-turning for a small amount of flour.

After

A river doing the work all day.

On larger screens, drag the divider (or use the arrow keys) to give more room to the world before or after.

VI

Its legacy

What came after

MHI 021

The Water Wheel

  • In this museum

    The Steam Engine

    Early steam engines were often used to pump water back over mill wheels.

  • Beyond the collection

    Hydroelectric power

    Turbines are direct descendants of the wheel.

VII

Human stories

The people and the moments

Mills in the Domesday Book

The great survey of England in 1086 lists more than 5,000 mills, showing how widespread water power had become by that time.

Where accounts differ, this museum follows the documented record and says so.

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