Reflection of the Sun on Rippling Water Surface

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Sun glitter is a bright, sparkling light formed when sunlight reflects from water waves. A rippled by a locally smooth surface such as water with waves will reflect the sun at different angles at each point on the surface of the waves. As a result, a viewer in the right position will see many small images of the sun, formed by portions of waves oriented correctly to reflect the sun’s light to the viewer.

Flat-Earthers use the long shape of the sun’s reflection on a water surface to “prove” Earth is flat. In reality, the shape of the reflection is the result of the rippling water surface. It can easily occur on a curved surface and does not prove a specific shape of Earth.

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