Lecture

Gnomonics: Understanding Shadows and Time Measurement

In course

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Description

This lecture delves into the concept of gnomonics, focusing on the measurement of shadows to determine time. It covers the historical development of sundials, the use of gnomons to measure the length of shadows, and the significance of different shadow angles during solstices and equinoxes. The lecture also explores the construction of meridians, the role of gnomons in ancient timekeeping, and the relationship between gnomons and celestial spheres.

Instructor

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Official source

https://mediaspace.epfl.ch/media/0_yvcyommp

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