In this mind-bending puzzle, there are three numbers that are visible - 21, 22, and 23. But there is a third number in this ...

The peripheral drift illusion causes us to perceive motion in a still image. A new study shows that the mechanism of this illusion relies on changes in pupil size.

Optical illusions have long intrigued humans by misleading our vision system into believing something that doesn't exist or ...

Fibre optics and optical communications is the use of thin strands of glass for sending information encoded into light over long distances. Total internal reflection prevents light inserted into ...

These results set the ground for microwave-to-optical transducers with entanglement rates overcoming the decoherence rates of state-of-the-art superconducting qubits. In this paper, the authors ...

Only those with a sharp eye and a strong focus can spot it within seconds. This optical illusion is a classic example of a visual puzzle that exploits the brain’s tendency to seek patterns. Our eyes ...

Medical imaging experts are adept at solving common optical illusions, according to research from four UK universities, including the University of East Anglia. The correct analysis of medical images ...

Optical illusions continue to capture public interest because they highlight the fascinating way the brain interprets images. These puzzles play with light, shadow, patterns, and depth perception ...

In today’s optical illusion challenge, we bring you a tricky brain teaser that will give your mind a good workout! Optical illusions have fascinated people for centuries, challenging the way we see ...

Small, maneuverable and impossible to jam, Russia’s best fiber-optic drones can—in the hands of skilled operators—slip into the buildings and dugouts sheltering Ukrainian vehicles.

For the premiere, the actress opted for a dress that doubled as an optical illusion. The dress was semi sheer and feature three layered panels—one that draped delicately over the chest area as a ...