If you enjoy testing your observing ability, we have a challenge for you. Another optical illusion is going viral on social media, with everyone puzzled and trying to solve it. Shared on X ...

Let's investigate! Readers are given five seconds to locate the number 23 concealed amid the 28s in this mind-bending optical illusion exercise. The most perceptive readers are those who can ...

An optical illusion showed a leopard on a tree with a hidden fish. Users were challenged to spot it in 10 seconds.

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 ...

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Keep testing your brain with mind-bending visual puzzles and stay tuned for more optical illusion challenges! Whether you solve them in seconds or need a bit more time, each puzzle helps enhance your ...

Optical illusions are a fascinating way to challenge our brains, making us question how we perceive visual information. They cleverly trick our minds into seeing things that aren’t immediately obvious ...

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But can you find the wild cat hiding from the lens in this tricky optical illusion? As the natural, earthy colours blend ...

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 ...

Abstract: The theory of the diffraction grating pair is developed by expanding the frequency dependence of the phase shift as far as the quadratic frequency term. The analogy between pulse compression ...