Double refraction in a calcite crystal C013 / 6638
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Double refraction in a calcite crystal C013 / 6638
Double refraction (birefringrnce) in a calcite crystal. this phenomenon occurs where a material is not uniform and affects light differently in different directions (anisotropy). This phenomenon, which is similar to polarisation, splits the light ray into two components, the fast or ordinary ray and the slow or extraordinary ray. Because the two types of waves travel at different speeds, they get out of phase, producing the double images behind the crystal. Calcite consists almost entirely of calcium carbonate. It is the main constituent of limestone and marble. This is a specimen if Iceland spar from Rodefjord, Iceland
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Media ID 9198041
© NATURAL HISTORY MUSEUM, LONDON/SCIENCE PHOTO LIBRARY
Calcite Calcium Carbonate Crystal Crystalline Crystals Demonstration Education Educational Fast Hand Hands Iceland Light Line Mineral Optical Optics Phenomena Phenomenon Refracting Refraction School Science Slow Transparent Extraordinary Ordinary Physical
EDITORS COMMENTS
This print showcases the mesmerizing phenomenon of double refraction in a calcite crystal. The intricate patterns and vibrant colors displayed on a black background immediately draw the viewer's attention. Double refraction, also known as birefringence, occurs when light passes through an anisotropic material like calcite, causing it to split into two components - the fast or ordinary ray and the slow or extraordinary ray. The transparent calcite crystal used in this demonstration is almost entirely composed of calcium carbonate, making it a significant constituent of limestone and marble. Originating from Rodefjord, Iceland, this specimen called Iceland spar exemplifies the remarkable optical properties exhibited by certain minerals. As we observe closely, we can see that behind the crystal there are double images formed due to the out-of-phase nature of these two types of waves traveling at different speeds. This intriguing effect resembles polarisation but is distinctively unique. Displayed against a black backdrop with expert precision and clarity, this photograph not only captures the beauty of natural crystals but also serves as an educational tool for those interested in physics, optics, or mineralogy. It offers a glimpse into one of nature's fascinating phenomena while highlighting its relevance within scientific research and exploration.
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