Mirror yet a window
WHAT TO DO
Fun
for one person:
Hold
it with your hands on either side of the mirror. Now look at the reflection of your one hand. Play around, take one hand off the
stick, move a hand around, look at it from different angles. Your brain may get a bit confused!
Fun
for two people:
Have
one friend hold it with their hands on either side of the mirror
horizontally. The other friend
should look at their friendıs profile, so that they see the flat face of the
mirror. Have the friend holding
the mirror let go of the hand closest to their partner, but keep it close to
the stick. It will look as though
itıs floating!
HOW IT WORKS
Your brain is getting tricked into thinking that the reflection of one hand is actually the other hand on the opposite side. In reality, this is not the case. That is why you can make it look as though the mirror/window is floating! This is also why your brain may feel a bit disoriented.
Source:
http://www.exploratorium.edu/snacks/mirrorly_window.html