1721 in science

The year 1721 in science and technology included many events, some of which are listed here.

See also: 1720 in science, other events of 1721, 1722 in science, list of years in science

Technology

• George Graham improves the pendulum clock's accuracy to 1 second per day by compensating for changes in the pendulum's length due to temperature variations

Births

Deaths

• September 11 – Rudolf Jakob Camerarius, German botanist (born 1665)