Dianna Cowern
Also known as: Physics Girl
Dianna Cowern Biography
Personal
Age: 36 years young
Born: Thursday 4th of May 1989
Years active: 2012-present (started around 23 years old; 13 years active)
Birthplace: Kauai, Hawaii, United States
Nationality: (American)
Ethnicity: Caucasian
Professions: YouTuber
Body
Hair color: Blonde
Eye color: Green
Height: 5'5" (or 165 cm)
Weight: 110 lbs (or 50 kg)
Body type: Slim
Boobs: Real/Natural
Extra
Instagram follower count: 293k (as of July 2025)
About Dianna Cowern
Dianna Leilani Cowern is a science communicator. She is a YouTuber who uploads videos explaining various physical phenomena. She worked in partnership with PBS Digital Studios channel Physics Girl until 2020, when she discontinued her partnership but continued uploading content related to physics.
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