An image printed on reflectance paper responds to the direction from which it is illuminated. The reflectance paper is covered with dimples that reflect light from different directions. See video ...

Holograms. Practically every sci-fi movie and TV show from the last 50 years has some version of this futuristic technology. A realistic 3D object composed of nothing more than light, usually hovering ...

Materials scientists can learn a lot about a sample material by shooting lasers at it. With nonlinear optical microscopy—a ...

All things considered, modern photography is pretty easy. It’s really just a matter of pointing the camera at the thing you want to take a picture of and letting the camera do the rest. But that doesn ...

Streetlights keep us safe at night but also contribute to global carbon emissions. Lighting accounts for 20% of the world's electricity consumption and nearly 6% of greenhouse gas emissions. Now, ...