The clear rectangular optical glass block is ideal for classroom demonstrations and scientific research. Its sturdy construction ensures durability and reliability in various experimental setups. This versatile tool helps students and researchers explore the fascinating refraction and optical phenomena. Features -Color:Transparent -Material:Glass -Size:7.50X3.90X1.50cm/2.95X1.53X0.59in -Precision design: the rectangular shape of the glass block allows for precise placement and alignment in experiments, offering a larger surface area for more comprehensive optical studies. -Educational tool: this glass block is an essential tool for teaching and demonstrating the principles of light refraction, making it a valuable addition to any physics or science classroom. -Reduced reflection: the clear glass surface minimizes unwanted reflections, ensuring that light passes through the block more uniformly, leading to more accurate experimental outcomes. -Robust construction: crafted from sturdy glass, this block is built to endure the rigors of frequent handling and use in educational settings, providing a reliable tool for years to come. -Wide compatibility: suitable for a range of educational levels, from elementary to advanced, this glass block supports a variety of physics and optics experiments, making it a versatile teaching aid Package list: 6 x glass bricks