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Photo of the Week

Frost and autumnal colours reflected on the windless surface of a Lake District tarn. Water reflects light because it has a different refractive index than air. When light hits a surface, some of it is reflected depending on the angle of incidence and the refractive indices of the two materials. The amount of light that is reflected also depends on the surface roughness of the water. When light hits a rough surface, it is reflected in multiple directions. This scattering of light reduces the amount of light that is reflected back to the observer.

Photograph by Rosamund Macfarlane

About Rosamund Macfarlane

Rosamund has travelled widely in the past 15 years photographing wildlife and landscapes abroad and in the UK. Rosamund has won numerous awards in international, regional and local photographic competitions and was a finalist in the Wildlife Photographer of the Year competition in 2015. She and her husband John retired to the Lake District a decade ago and together they have developed a passion for photography while walking the fells and getting to know their environs intimately.

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