This is an automated archive made by the Lemmit Bot.

The original was posted on /r/science by /u/sciencealert on 2024-09-30 10:58:20+00:00.

Original Title: Physicists finally know what creates static electricity: The beginning and the end of the sliding motion that produces static electricity experience different forces – resulting in a charge differential between the front and the back that results in the crackle of static electricity.