The Hollow Mask Illusion - ExpeRimental Extra! [NO AUDIO]

As Einstein rotates, what do you see? Does the face point towards you, or sink away? Use this video as a starting point for a great activity with kids, making their own 'hollow masks': https://youtu.be/0gCcWBnChVA

For more science experiments to do at home with your kids, visit http://www.rigb.org/families/experimental

Subscribe for regular science videos: http://bit.ly/RiSubscRibe

The Ri is on Twitter: http://twitter.com/ri_science
and Facebook: http://www.facebook.com/royalinstitution
and Tumblr: http://ri-science.tumblr.com/
Our editorial policy: http://richannel.org/home/editorial-policy
Subscribe for the latest science videos: http://bit.ly/RiNewsletter