35.6 MB (2.0 MB compressed)
3511 x 3543 pixels
29.7 x 30.0 cm ⏐ 11.7 x 11.8 in (300dpi)
TEK IMAGE / SCIENCE PHOTO LIBRARY TEK IMAGE / SCIENCE PHOTO LIBRARY
Optical fibres emitting light. These fibres are used for transmitting sound and images in the form of light. They are usually made from flexible glass that has a high refractive index. Each fibre consists of a core with an outer protective layer (cladding) that has a lower refractive index than the core. Light travelling through the fibre is contained within the core because of total internal refraction at the core/cladding boundary. This allows data to be transmitted over long distances with little or no absorption.
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