water wheel

Current-powered mill mechanism

A water wheel is a large wheel with paddles or buckets around its rim, positioned in a stream or river so that flowing water turns it.

The rotation powers machinery—historically for grinding grain, sawing lumber, or running textile mills.

Water wheels were the primary source of mechanical power before steam engines.

The old mill's water wheel still turns, though it powers nothing now.

engineering

turbine

Blade-driven energy converter

  • axleShaft for wheel rotation
  • shaftNarrow vertical passage
  • paddleFlat-bladed water tool

gears · bearings · rotation · torque · mechanism · buckets · sluice · flume · overshot · undershot

riverside

stream

Steady continuous flow

  • creekNarrow natural watercourse
  • riverLarge flowing watercourse
  • currentDirected flow of charge

flow · waterway · channel · weir · millpond · bank · diversion · intake · freshwater · riparian

hydropower

renewable

Capable of restoration

energy · dam · kinetic · power plant · current · flow · grid · megawatt · penstock · impoundment

historical

gristmill

Building for grinding grain

medieval · antiquity · ancient · colonial · millwright · watermill · forge · blacksmith · textile mill · paper mill

milling

grindstone

Rotating stone for sharpening

  • flourMilled grain powder
  • grainCereal plant's harvest unit
  • wheatCereal crop for flour

corn · barley · millstone · grist · meal · grinding · cereal · hopper · chute · sifting

Categories
Opposites
power source

water wheelsteam engine

Thermal vapor motor

internal combustion engine · electric motor · gas turbine · diesel engine · treadmill

technological era

water wheelelectric generator

Motion-powered electricity source

nuclear power plant · steam turbine · hydroelectric dam · smart grid · fusion reactor

energy direction

water wheelwater pump

Device circulating liquid mechanically

Archimedes screw · bilge pump · hydraulic pump

Family

waterwheel, waterwheels

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G