 Welcome back to Kids Fun Science, my name is Kent and today's experiment is the Schroder stairs optical illusion. And if you like this video remember to please click subscribe and like. So the Schroder staircase is an optical illusion which is a two-dimensional drawing which may first be perceived either as a drawing of a staircase leading from the left to the right downwards or the same staircase only turned upside down facing the same exact way. And I'll show you in just a second. So look at the staircase right down the middle and stare at it and then I'll spin the staircase around upside down and then blink your eyes and you should see the staircase going down the same direction. We'll do it one more time stare down the middle, flip it around, blink and you see the staircase is changed which is pretty awesome it's going the same direction. So the staircase it can be perceived in two different ways depending on whether your viewers consider A or B to be the closest wall. So I marked them A and B and so when you see I flip it around they actually switch walls and the staircase still goes down the right way after you blink your eyes they're pretty incredible. If you like this optical illusion experiment please remember to click thumbs up and subscribe and thanks for watching.