Theoretical physicist Sean Carroll, PhD, is challenged to explain the concept of dimensions to 5 different people; a child, a teen, a college student, a grad student, and an expert.
Physicist Explains Dimensions in 5 Levels of Difficulty

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Theoretical physicist Sean Carroll, PhD, is challenged to explain the concept of dimensions to 5 different people; a child, a teen, a college student, a grad student, and an expert.