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Modern Cosmology

30 Phil, Chapter 21, Galileo, Touchstone 54: Modern Cosmology. The story of Galileo is also the story of Copernicus, and the story of modern cosmology. To properly tell the story of Copernicus, we need to mention Aristarchus of Samos, a Greek astronomer and mathematician born around 310 BCE. Aristarchus put forth a heliocentric model, proposing […]

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Infinitesimal

30 Phil, Chapter 21, Galileo, Touchstone 53: Infinitesimal. The infinitesimal is a form of infinity representing a theoretical value that is infinitely close to zero but not zero itself. Galileo Galilei discussed concepts related to the infinitesimal in his work “Two New Sciences”. In this work, he explored the foundations of kinematics and the strength

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Relativity Principle

30 Phil, Chapter 21, Galileo, Touchstone 52: Relativity Principle. The Relativity Principle states that the laws of physics are the same for all observers in uniform motion relative to one another. This means that the passage of time, the length of objects, and the speed of light are the same for everyone, regardless of their

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