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Light is the ultimate means of sending information to and from the interior structure of materials — it packages data in a signal of zero mass and unmatched speed. However, light is, in a sense, ...

Refraction is the change in direction of light when it passes from one medium to another. The working of a lens is based on the refraction of light when they pass through it. Lens is a transparent ...

In an interview with ETHealthworld, Saugata Banerjee, Vice President 2.5 NVG, South & South East Asia - ‎Essilor, Singapore, shares how their business model is determined to reduce the burden of ...