![optics - Why does light ray not change direction when it pass though the curve part of the semi-circular glass block? - Physics Stack Exchange optics - Why does light ray not change direction when it pass though the curve part of the semi-circular glass block? - Physics Stack Exchange](https://i.stack.imgur.com/eKMye.jpg)
optics - Why does light ray not change direction when it pass though the curve part of the semi-circular glass block? - Physics Stack Exchange
![PPT - Place a rectangular glass block on a sheet of paper and draw around it. PowerPoint Presentation - ID:7067819 PPT - Place a rectangular glass block on a sheet of paper and draw around it. PowerPoint Presentation - ID:7067819](https://image3.slideserve.com/7067819/slide1-l.jpg)
PPT - Place a rectangular glass block on a sheet of paper and draw around it. PowerPoint Presentation - ID:7067819
Refraction - Reflection and refraction of light - CCEA - GCSE Physics (Single Science) Revision - CCEA - BBC Bitesize
![A ray of white light travels through air (index of refraction n=1) and then strikes a glass block that is 1.5 cm thick and has index of refraction n=1.6 as shown below. A ray of white light travels through air (index of refraction n=1) and then strikes a glass block that is 1.5 cm thick and has index of refraction n=1.6 as shown below.](https://homework.study.com/cimages/multimages/16/diagram4014431399528872038.jpg)