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Optical lenses use the principle of refraction to focus light rays or disperse them. Refraction is the bending of a ray of light when it moves between media of different densities at an angle. More »

www.reference.com Science Physics Optics & Waves

Optical devices include magnifying lenses, spectacles, binoculars, microscopes, telescopes and lasers. Optical devices manipulate light waves to aid in viewing or analyzing those waves to determine properties of the obje... More »

www.reference.com Science Physics Optics & Waves

The Optical Superstore does not currently ship outside of Australia, as of September 2015. However, the company website implies that there are plans to ship internationally in the future. More »

www.reference.com Health Vision Glasses & Contacts
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A magnifying glass "bends light rays to make things look bigger than they are," according to About.com. This fools the eye and brain, causing the light to look as if it comes from a different object. As light rays pass t... More »

www.reference.com Science Physics Optics & Waves

Concave lenses, which are thinner at the center than edges, work by allowing parallel rays of light to pass through, refract and diverge, making the image appear to come from one point. This point is known as the princip... More »

www.reference.com Science Physics Optics & Waves

An observer's perception of an object being examined changes with a magnifying lens because the lens bends the light rays from the object, thus distorting the size of the image formed, making it appear bigger. Light rays... More »

www.reference.com Science Physics Optics & Waves

The brilliant sparkle of a diamond occurs from refraction and the total internal reflection of light. The precisely cut surfaces of a diamond refract or redirect incoming light until it is reflected back out of the facet... More »

www.reference.com Science Physics Optics & Waves