This tablet - like device allows personal viewing of 3 - D content without any glasses by using a clever optical trick to create depth. (discovermagazine.com)
As a painter, I was interested to read Jessica Griggs's article on optical tricks used by artists (18 September, p... (newscientist.com)
It's a neat optical trick: As ice is compressed over time, it becomes easier for light to pass through it. (discovermagazine.com)