Science glossary film: Watt (W)

The SI unit of power, the rate at which energy is converted or work is done. One watt is defined as one joule per second. The unit is named after the Scottish inventor and engineer James Watt, who greatly improved steam engine technology in the late 18th century.

The unit is named after the Scottish inventor and engineer James Watt, who greatly improved steam engine technology in the late 18th century.