Mirrors and lenses

This post covers my notes from Chapters 12-14 in the System for Opthalmic Dispensing. It includes the basics of lens diagrams, the refractive index, prisms, spherical lenses, cylindrical lenses, le…

Every one of us has used the spherical lenses in some way or the other. The lens we use in spectacles, the mirror of our vehicle, is nothing but the spherical surface. But do you know what causes refraction in the spherical surface? Let us study in detail about spherical surface and also about refraction in lenses.

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Smart contact lenses are using miniscule mirrors and filters to give telescopic vision and fight macular degeneration.

How is the Image Formed by a Spherical Mirror? Image formation by Spherical mirror in different cases Introduction: From mirror formula, we find that for a mirror of a fixed focal length f, as object distance u changes, image distance n also changes. Image Formed by Concave mirror Object at Infinity A point object lying on […]

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Learn how the focal length of a lens affects a magnifying glass's magnifying power in this cool science fair project idea for 8th grade.

Lenses are used in cameras, telescopes, and other instruments to refract and to focus rays of light. Lenses used as eyeglasses help people w...

Get better night vision, eye health monitoring, and more

Reflection of light and other forms of electromagnetic radiation occurs when waves encounter a boundary that does not absorb the radiation's energy, but instead bounces the waves off its surface.