The Penrose triangle (here dcorated with playing dices) is a very traditional form of optical illusion which seemed very difficult to reproduce in real life and in 3D.
Up to we’ve seen these two impressive realisations:
YouTube link
The Penrose triangle (here dcorated with playing dices) is a very traditional form of optical illusion which seemed very difficult to reproduce in real life and in 3D.
Up to we’ve seen these two impressive realisations:
We have to admit that we all thought it was only an optical illusion up to this video demonstration.
Or should we follow the counter-explanation showing that this is a simple perspective trick: