Features:<br> High contrast linear polarizer.<br> High transmittance of unpolarized light from 380 to 700nm.<br> Make the study of light and color fun and memorable.<br> for Ideal for a variety of imaging applications, experiments involving birefringence, light scattering, and more.<br> Widely used in photography settings, science projects, and studying physics.<br> Specifications:<br> Material: TAC+PVA<br> Size: Approx. 30x20cm/11.81x7.87 inch<br> Optical Type: High contrast transmissive<br> Transmittance: single(42%) ; crossed(0.005%)<br> Color: neutral gray<br> Polarizing Efficiency: 99.99%<br> Film Thickness: 150m<br> Polarization axis: 50mm<br> Wavelength: 380~700nm<br> Thickness: 0.25mm<br> Direction: linear<br> Note:<br> Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you order.<br> Due to the difference between different monitors, the picture may not reflect the actual color of the item.<br> Package includes:<br> 1x Polarized Film Sheet