David Novick
@novickprof.bsky.social
Retired professor of Engineering
The calm before the mob.
November 27, 2025 at 10:25 PM
The calm before the mob.
Happy Thanksgiving!
November 26, 2025 at 2:48 PM
Happy Thanksgiving!
In this adaptation of the confetti #illusion, the background waves appear to be orange, (almost) white, yellow, and pink, but all four background waves are identical.
April 8, 2025 at 2:43 PM
In this adaptation of the confetti #illusion, the background waves appear to be orange, (almost) white, yellow, and pink, but all four background waves are identical.
In this Munker #illusion, despite the apparently huge difference in color between the yellow and blue spheres in the background, all the spheres are actually identical.
April 1, 2025 at 4:31 PM
In this Munker #illusion, despite the apparently huge difference in color between the yellow and blue spheres in the background, all the spheres are actually identical.
In this Munker #illusion, the backround spheres appear to be green and blue but are actually the same color. This illusion is particularly surprising because the foreground stripes are near opposites of green and blue.
March 18, 2025 at 7:28 PM
In this Munker #illusion, the backround spheres appear to be green and blue but are actually the same color. This illusion is particularly surprising because the foreground stripes are near opposites of green and blue.
20 seconds of calm
February 28, 2025 at 4:04 PM
20 seconds of calm
20 seconds of calm
February 21, 2025 at 4:37 PM
20 seconds of calm
In this assimilation #illusion, the background colors of both the disks and the surrounds appear to be yellow and orange but are actually identical.
February 18, 2025 at 3:48 PM
In this assimilation #illusion, the background colors of both the disks and the surrounds appear to be yellow and orange but are actually identical.
In this version of the confetti #illusion, the four background squiggles appear to be tan, orange, pink, and yellow but are in fact identical.
February 12, 2025 at 12:21 AM
In this version of the confetti #illusion, the four background squiggles appear to be tan, orange, pink, and yellow but are in fact identical.
In this "Mondrian" assimilation #illusion, the background color in all the apparently tan, yellow, and orange areas is actually exactly the same.
January 7, 2025 at 2:56 PM
In this "Mondrian" assimilation #illusion, the background color in all the apparently tan, yellow, and orange areas is actually exactly the same.
Wishing you a very happy new year!
December 31, 2024 at 3:04 PM
Wishing you a very happy new year!
This Munker illusion is special because the red foreground ("inducer") color seems to be nearly the opposite of the apparent ("induced") bluish-white of the background color of half of the spheres.
December 31, 2024 at 2:50 PM
This Munker illusion is special because the red foreground ("inducer") color seems to be nearly the opposite of the apparent ("induced") bluish-white of the background color of half of the spheres.
Four-color confetti illusion. Although the background spheres appear to be yellow-green orange, pink, and blue-white, they are actually identical.
December 24, 2024 at 3:35 PM
Four-color confetti illusion. Although the background spheres appear to be yellow-green orange, pink, and blue-white, they are actually identical.
Dawn reaches the Wasatch Range.
December 18, 2024 at 4:20 PM
Dawn reaches the Wasatch Range.
