1pcs 30*20CM Horizontal 0 degree Polarizer Film for LCD,Linearthe first time!<br>We'll sure solve for you! Your good shopping experience is our forward momentum. Thanks!<br>Introduction:<br>Great for doing cool science projects/experiments.<br>Also great in photography setups!<br>Available in Various Sheet Sizes for your Customized Use<br>The sheet is 0.13mm thick and 11.8" X 7.8" (30cmx20cm), Important(!)<br>Makes the study of light and color fun and unforgettable.<br>Features slide mounted frames for easy handling during classroom experiments.<br>Ideal for experiments involving birefringance, light scattering and more.<br>Polarizing filters are used for experiments involving birefringence, light scattering, polarized light experiments, light reflection, Brewster';s angle and how polarized sunglasses work. Same linear polarized material as our Linear Polarized 3-D glasses