Category:Snell's window

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<nowiki>スネルの窓; fenêtre de Snell; חלון סנל; Вікно Снеліуса; Tetingkap Snell; Janela de Snell; Окно Снелла; Cửa sổ Snell; Snell's window; نافذة سنيل; 斯涅爾窗; சினெல்லின் சன்னல்; underwater phenomenon due to Snell's Law; Вікно Снелла; Snell's circle</nowiki>
Snell's window 
underwater phenomenon due to Snell's Law
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Snell's window is an optical effect visible when underwater and looking upward. Under ideal conditions, an observer looking up at the water surface from underneath sees a perfectly circular image of the entire above-water hemisphere—from horizon to horizon. Due to refraction at the air/water boundary, Snell's window compresses a 180° angle of view above water to a 97° angle of view below water, similar to the effect of a fisheye lens.

Media in category "Snell's window"

The following 18 files are in this category, out of 18 total.