High Science

What is length? What is time? Who decided the length of a second? The crew explores the fundamentals of physics and learns how we have come to define our units of measurement. Topics Discussed: What is physics? Physical quantities Galileo: The father of modern science How do we communicate measurements? History of the meter What is time? What is a second Mass vs. weight How we define a kilogram Composite units Radioactive dating How do we measure extreme lengths, masses, and times?