To do a science project, artificial. Study of the properties of matter, light, geometry and spatial measurement of the thickness of the acrylic glass rods (Plexiglass) Group intended visual invention, a device that can measure the thickness of the acrylic rods by not touching the glass rods and use of scientific knowledge in. As a guideline, there are artificial Visual devices that can measure the thickness of the transparent objects without touching them. From the experiment found a firing the laser beam are small. Through the clear glass rods are made of light refraction are clearly visible. From such a principle, if we can apply the principles of spatial geometry of light calculate thickness. The index of refraction of glass rods and the speed of light within the glass rods will make us understand the principle of the linear geometry of light more.
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