optical illusion, it's likely that you and your pal are going to see completely different things. And that's okay because a brainteaser will do that to you, it depends on what you see.An illusion is caused by the visual system and characterised by a visual percept that makes things become rather deceiving.
The latest brainteaser which will leave you puzzled was shared on Optics4Kids. In the picture uploaded onto the website it asks how many triangles are present in the simple-looking photo.So how many do you see?It's called the Kanizsa Triangle and the caption under the photo read: "How many triangles are present in the image?"The illusion might leave you counting for days but it's really not that hard.In fact, according to the optical.
Read more on dailystar.co.uk