Nature is full of an almost infinite array of colors, but some are more unique than others. Apart from the inanimate sky and water, the color blue only some animals and flowers have the privilege of ...

Materials scientists can learn a lot about a sample material by shooting lasers at it. With nonlinear optical microscopy—a specialized imaging technique that looks for a change in the color of intense ...

Optical illusions come in all forms, but the good ol' fashioned accidental photo illusion has to be my favourite variety. From perplexing perspectives to that iconic blue (or is it gold?) dress, photo ...

Optical illusions have gained a lot of popularity recently, as they get our brain to exercise, and can be the perfect test of ...

In our today's optical illusion, a hidden number is challenging even the sharpest observers. At first glance, the image appears to be filled with the repeated word "ROCK," cleverly arranged in a ...

Every so often an optical illusion comes along that actually makes me feel ill. And this is one of them. What appears to be a series of decidedly unstraight lines placed in a wonky grid actually turns ...

Martin Doherty received funding from the British Academy/Leverhulme Trust who partially supported this work. He continues to receive funding from the Leverhulme Trust. Radoslaw Wincza does not work ...