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The Digital Camera: Refraction by a Spherical Surface

Having learned about refraction in our recent posts, we can now begin to appreciate the imaging capability of a lens by applying the principle of Snell’s law to understand the way in which a glass...

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The Digital Camera: The Spherical Lens (Part I)

We recently examined the way a spherical glass surface focusses light; however, this focussing property is not unique for light that travels from air into glass. Instead, this phenomenon occurs anytime...

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