40.4 MB (2.3 MB compressed)
3780 x 3739 pixels
32.0 x 31.8 cm ⏐ 12.6 x 12.5 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. 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 for very long distances with little or no absorption.
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