EPISODE · Oct 22, 2007

Lecture 22: Light the Messenger

from Astronomy 161 - Introduction to Solar System Astronomy - Autumn 2007 · host Richard Pogge

What is light? Most astronomical objects are too far away to measure directly. Light is the messenger of the Universe, carrying with it information about objects as near as the Moon and as far away as the most distant objects in the visible Universe. In this lecture we will review the basic properties of light, the electromagnetic spectrum, the inverse square law of brightness, and the Dopper Effect. Recorded 2007 Oct 22 in 1000 McPherson Lab on the Columbus campus of The Ohio State University.

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