The optical illusion puzzle with matchsticks left viewers perplexed, as they struggled to count the correct number due to the tricky visual effects.

Optical illusion personality tests reveal insights into one's personality based on initial perceptions of images. A shared image featuring an elephant and human hands indicates whether an ...

If yes, then here's a challenge for you! This is an optical illusion that has been created to make you observe concealed details in a second. Can you spot the heart in this picture of a swan in 3 ...

The biggest stories of the day delivered to your inbox.

This optical illusion is the ultimate challenge! Three faces are hidden inside this beautiful florist’s shop—but only 1% of people can find them in just 5 seconds. Look at the image of the ...

Are you ready to test your vision? In this mind-bending optical illusion challenge the readers are asked to find a frog hiding in the leaves. The time limit for spotting the frog is 6 seconds.

Browse 786,900+ blue square background stock illustrations and vector graphics available royalty-free, or search for blue square background vector to find more great stock images and vector art.

The authors conducted more than 120 interviews to study how a set of white people define and identify racism and sexism. In ...

Optics and photonics covers the entire electromagnetic spectrum from high-energy gamma rays and X-rays, through the optical regime of ultraviolet, visible, and infrared light, to long-wavelength ...