
His observations on the "strange events in our solar system" and as to why the sky looked blue and red colour was used in traffic lights to signal to vehicles to stop.
When Prof Jayant Narlikar saw the sun rise in the west
Prospero's Books
His observations on the "strange events in our solar system" and as to why the sky looked blue and red colour was used in traffic lights to signal to vehicles to stop.
When Prof Jayant Narlikar saw the sun rise in the west
“The atmosphere is blue by reason of the darkness above it because black and white make blue.”
The Notebooks of Leonardo da Vinci (1883), VII On the Proportions and on the Movements of the Human Figure
As quoted in Earth's Aura (1977) by Louise B. Young
Context: What beauty. I saw clouds and their light shadows on the distant dear earth.... The water looked like darkish, slightly gleaming spots.... When I watched the horizon, I saw the abrupt, contrasting transition from the earth's light-colored surface to the absolutely black sky. I enjoyed the rich color spectrum of the earth. It is surrounded by a light blue aureole that gradually darkens, becoming turquiose, dark blue, violet, and finally coal black.
The Notebooks of Leonardo da Vinci (1883), VII On the Proportions and on the Movements of the Human Figure
Statement of April 1961, as quoted in Warrior of Light : The Life of Nicholas Roerich : Artist, Himalayan explorer and visionary (2002) by Colleen Messina, p. 46
Source: Practical Pictorial Photography, 1898, Tone and atmoshphere, p. 47