![Bright beam of light forces its way through dense trees in forest. Ray of sun breaking through dense foliage in forest. Light between trees in the for Stock Photo - Alamy Bright beam of light forces its way through dense trees in forest. Ray of sun breaking through dense foliage in forest. Light between trees in the for Stock Photo - Alamy](https://c8.alamy.com/comp/2GXMD80/bright-beam-of-light-forces-its-way-through-dense-trees-in-forest-ray-of-sun-breaking-through-dense-foliage-in-forest-light-between-trees-in-the-for-2GXMD80.jpg)
Bright beam of light forces its way through dense trees in forest. Ray of sun breaking through dense foliage in forest. Light between trees in the for Stock Photo - Alamy
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Refraction Changing of speed of a wave (light) when it travels from one medium to another. When light travels from one medium into another at an angle, - ppt download
![3 possibilities when light ray travels from an optically denser medium towards an optically less dense medium | Evan's Space 3 possibilities when light ray travels from an optically denser medium towards an optically less dense medium | Evan's Space](https://evantoh23.files.wordpress.com/2017/05/img_20170531_225541.png)
3 possibilities when light ray travels from an optically denser medium towards an optically less dense medium | Evan's Space
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![A ray of light from a denser medium strike a rarer medium at an angle of incidence I (see Fig). - YouTube A ray of light from a denser medium strike a rarer medium at an angle of incidence I (see Fig). - YouTube](https://i.ytimg.com/vi/OoQ-a89oONo/maxresdefault.jpg)