Wednesday, July 29, 2009

the bluest blue it is possible to obtain

In the light transmitted by cuprate of ammonia of a certain thickness, the red, yellow, orange, and green are wholly extinguished while the blue, indigo, and violet are allowed to pass. The result is the fullest and bluest blue it is possible to obtain.

"Proceedings of the Royal Society of London," 1876

[Below Chicago Avenue west of Winchester Street]

About Me

Chicago, Illinois, United States

Blog Archive