The human retina contains two kinds of photoreceptors — cones, which react quickly to fine details and colors, and rods, which, though slower and bad at colors, are far more numerous and many times more sensitive to light.
Cone cells detect color, while rod cells detect movement.
For The Times, he spent months adjusting the rods' color and scale, and in the early renderings they had a lovely, ethereal quality.
2. Ready-to-hang French curtain panels in dozens of fabrics and colors, along with rods, rings and clips, are at a new Madura store on the Upper East Side.
The red color of frog rod cells had actually been noted some 25 years earlier by Müller, who incidentally first described retinal Müller cells, but the color was attributed to hemoglobin and not further explored.
Each test item was shown against a dark background on a computer screen and participants had to name the color of the rod that the model was looking at.
As the sun moves across the sky, particularly at dawn or dusk, waves of color sweep across the rods in continually changing golds, reds and blues.
For years the painting, an abstract composition of bright blocks and rods of color, resided in the Stedelijk Museum in Amsterdam with 14 others by the artist.
During the next several months, the bone is lengthened 1 millimeter at a time by twisting color and number coded rods attached to the Ilizarov ring apparatus.
Early in the evening, one of the few truly high prices in an otherwise tepid evening was paid for Kazimir Malevich's "Suprematist Composition," a 1916 abstract canvas of bold blocks and rods of colors.
