This is a blog about various design and technology subjects.

Posts Tagged ‘pigment’


In the world of art materials, things keep getting better and better. 100,000 years ago, in Blombos Cave in South Africa, a complete toolkit for grinding pigments and making a primitive paint-like substance has been recently discovered. Egyptians mixed pigment with gums or animal glue, which made them workable and fixed them to the surface being decorated over ago, and they still possess their brilliant color 2,000 years later. We have come a long way.


In The Royal Society paper Geometric visual hallucinations, Euclidean symmetry and the functional architecture of striate cortex, it is demonstrated through a mathematical investigation that the retinocortical map of neuronal circuits determine the geometry of images experienced with eyes closed and in other states of excitation. In other words, the structure of the striate cortex, the area directly opposite the eyes at the back of the head, determines many of visual patterns we witness.