Relating to stationary electrical charges or the forces between charged objects at rest.
From electrostatic + -al (adjectival suffix). From electro- + static (from Latin staticus 'causing to stand'). Developed in 18th-century physics terminology.
When you rub a balloon on your hair and it sticks to the wall, that's electrostatical force at work—stationary charges creating attraction, and it's the same principle that makes lightning happen during thunderstorms.
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