Seeing the invisible: Polarizer adjustments increase visibility of transparent objects

Transparent multispectral photodetectors mimicking the human visual system

Light-bending antics render object invisible – The Mail & Guardian

Light and Humidity Dual-Responsive Anti-Counterfeiting Films Based on Hydrogen-Bonded Cholesteric Liquid Crystal Polymers with Spiropyran

Astronomical filter - Wikipedia

CN100395568C - Method for making polarizing invisible image by using heat sensitive process - Google Patents

Graphene/Cholesteric Liquid-Crystal-Based Electro-Driven Thermochromic Light Modulators toward Wide-Gamut Dynamic Light Color-Tuning-Related Applications

Light Activities

A MUST-HAVE – Whether you're indoors or outdoors, the right polarizing filter is a must for every photography equipment. No other filter provides such

B + W Circular Polarizer Kaesemann - Standard Mount (F-PRO), HTC, 16 Layers Multi-Resistant Coating, Photography Filter, 43 mm

Microscopy - Wikipedia

ZEISS Microscopy Online Campus, Microscopy Basics