character: The Inventor of the Sundial
topic: Sundial and Shadow Casting Principles
subject: Math
LearnActions
SearchCreate
character: Archimedes
topic: Mathematics and Geometry in Shadow Casting
subject: Math
LearnActions
SearchCreate
character: Galileo Galilei
topic: Timekeeping Methods and Innovations
subject: Math
LearnActions
SearchCreate
character: Liu Hui
topic: Ancient Chinese Mathematical Techniques in Time Measurement
subject: Math
LearnActions
SearchCreate