Illusions questions This is a list of recently added questions about illusions. Play illusions quiz and see all the questions. Which continent is that?Australia. This is Australia map, with north at the bottom side.Created by: globalquiz.orgeasy 71% North AmericaNorth America2972South AmericaSouth America1032AsiaAsia4215AustraliaAustralia21074continents riddles » How many dots at the intersections are black?None. In this scintillating grid illusion, dark dots seem to appear and disappear randomly. Various theories have been proposed to explain it. It may be caused by the mechanism of lateral inhibition (the capacity of an excited neuron to reduce the activity of its neighbors).Created by: Steve Lambertyvery easy 88% 10%10%30625%25%55350%50%1353NoneNone16444optical illusions riddles » Which orange circle is larger?Both are the same size. This is known Ebbinghaus illusion. Although commonly thought of as an illusion of size, recent work suggests that the critical factor in the illusion is not the size, but the distance of the surrounding circles. In a similar way, the Moon appears larger on clear sky when it's close to the horizon line.Created by: globalquiz.orgvery easy 88% the one on the leftthe one on the left521the one on the rightthe one on the right2157both are the same sizeboth are the same size24307the first one you look atthe first one you look at634technology riddles » Whose face has been combined with Albert Einstein in this hybrid image?Marylin Monroe. A Hybrid Image is an optical illusion developed at MIT in which an image can be interpreted in one of two different ways depending on viewing distance. In order to see Marylin clearly, you need to move away of the screenCreated by: Cleoeasy 77% Kim BasingerKim Basinger678MadonnaMadonna1907Marylin MonroeMarylin Monroe19457Woody AllenWoody Allen2945technology riddles » How is this polygon called? (the one over the circles)Square. In this Ehrenstein illusion the sides of a square placed inside a pattern of concentric circles take an apparent curved shape. But in reality, the sides are straight.Created by: Debbie Foxeasy 74% squaresquare27378rhomboidrhomboid3997concave squareconcave square3176concave rhomboidconcave rhomboid2229geometry riddles » Which shape is larger?None of them. Both shapes are the same, but the bottom one is placed more to the right. This is however difficult to notice. It is known as Jastrow Illusion.Created by: globalquiz.orgaverage 66% AA949BB5969None of themNone of them22464Both are largerBoth are larger4254mathematics riddles » Which line is the longest?All are the same. This illusion has a long research history. It seems that people living in urbanized areas perceive the lines as representing the corners of rectilinear objects viewed in perspective, being more susceptible to illusion than people from rural areas.Created by: globalquiz.orgvery easy 86% AA759BB1971CC400All are the sameAll are the same20517technology riddles » Which of the lines on the right, is the continuation of the black line on the left?Red one. This is known as Poggendorff illusion, first described in 1860. Many detailed studies of the illusion point to its principal cause: acute angles in the figure are seen by viewers as expanded.Created by: globalquiz.orghard 45% red onered one5894blue oneblue one2667none of themnone of them2590both of themboth of them1737technology riddles » Which lines are parallel?Green, blue and red. This is a well known Zöllner illusion, first described in 1860. It may be caused by this impression of depth. The black lines are parallel, too!Created by: globalquiz.orgeasy 70% blue and red onlyblue and red only915green and red onlygreen and red only1829green, blue and redgreen, blue and red14627nonenone3524technology riddles » Which area is brighter?Both are the same. This is the well known checker shadow illusion, first published in 1995 by Edward H. Adelson, Professor of Vision Science at MIT. The area A appears darker because of its light surrounding. At the same time, area B, surrounded with dark areas, appear lighter.Created by: globalquiz.orgeasy 71% AA1623BB2514Both are the sameBoth are the same14091It depends on the order of seeingIt depends on the order of seeing1355optics riddles » Play technology quiz and see all the questions.