Geometric Optics: Crash Course Physics #38

LIGHT! Let's talk about it today. Sunlight, moonlight, torchlight, and flashlight. They all come from different places, but they’re the very same thing: light! It’s what makes it possible for us to see the world around us, so it’s worth a close, hard look. For instance, how does light travel? When you flip that switch in the bathroom to brush your teeth, how does light move from the light bulb, to the mirror, and into your eyes?

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Geometric Optics



How Optics Work - the basics of cameras, lenses and telescopes

An introduction to basic concepts in optics: why an optic is required to form an image, basic types of optics, resolution.

Contents:
00:00 - Introduction
01:44 - Pinhole camera
03:28 - Mirror optics
05:06 - Lenses
06:27 - Focus
10:17 - Resolution

Sources:
[1] James Ayscough, A short account of the eye and nature of vision (1755), archived at https://commons.wikimedia.org/wiki/File:1755_james_ayscough.jpg
[2] https://www.nasa.gov/content/goddard/hubble-space-telescope-optics-system
[3] https://commons.wikimedia.org/wiki/File:Diagram_of_human_eye_without_labels.svg

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