How many people did you see in this picture? Today's optical illusion will make you baffled as you have to spot the number of people in a busy picture. How many people you will spot will test your IQ ...

Sometimes we need a non-contact liquid level sensor. There are several ways to build that, but the easiest is to try an optical liquid level sensor. You may already have an idea in mind since you are ...

An optical illusion showed a bird hidden among tyres in a junkyard, challenging users to spot it within 4 seconds. Optical illusions are fascinating brain teasers that test our perception, attention ...

Dive into a whimsical world of illusion where cartoon frogs happily juggle vibrant umbrellas! Your mission? Spot the two ...

An optical Illusion is a visual trick where our eyes and brain perceive different images from reality. These illusions are a type of visual puzzle that creates a misleading effect on our brain, ...

As sailors in the 17th century learned the hard way, having an accurate clock for navigation is pointless if it is too delicate to carry aboard ship. The same goes for the super accurate optical ...

In Level 6.3, gamers will have to obtain batteries so they can activate the teleporter and use it. At first glance, players will notice that there seems to be a battery in the center of four pillars.