character: Galileo Galilei
topic: Principles of Physics
subject: History
LearnActions
SearchCreate
character: Isaac Newton
topic: Laws of Motion
subject: History
LearnActions
SearchCreate
character: Archimedes
topic: Principles of Buoyancy
subject: History
LearnActions
SearchCreate
character: Nicolas Copernicus
topic: Heliocentric Theory
subject: History
LearnActions
SearchCreate