Light changes speed as it passes from one medium to another. This is called refraction. The frequency of light does not change as it refracts. The refractive index of a material is a measure of ...

When light travels at an angle between two different materials, their refractive indices determine the angle of transmission (refraction) of the light beam. In general, the refractive index varies ...

The direction of the ray may also change. This property of waves is called refraction and commonly occurs with light rays. A normal is a dotted line drawn perpendicular to the surface of the ...

An animated GIF of a highly magnified view of a single stoma on the leaf of a boat lily (Tradescantia spathacea). The stoma is opening and closing in response to changing levels of carbon dioxide ...

A moving picture in GIF format, which comprises a series of frames. When displayed, they provide an animated sequence that cycles over and over without stopping. Although popular on the Web ...

This is turbulent flow (top) compared to laminar flow (bottom). Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing ...

Using a genome editing tool known as Crispr, US scientists inserted a gif - five frames of a horse galloping - into the DNA of bacteria. Then the team sequenced the bacterial DNA to retrieve the ...

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Every corner of the internet is packed with GIFs, whether that's an Instagram story, a comment on a Reddit post, a chat from ...

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It's so utterly surprising that words simply won't cut it. So what do you do instead? You send a GIF of Chris Pratt's iconic ...