Pretty Girl Afterimage

1. Stare at the red dot on the girl’s nose for 15 – 30 seconds.
2. Turn your eyes to a plain surface (your ceiling or blank wall).
3. Blink repeatedly and quickly

Reddish Strawberries Illusion: Akiyoshi Kitaoka

Akiyoshi Kitaoka 2016

This image consists of pixels of cyan or near-cyan hue, without pixels of red, but strawberries appear to be reddish. This image is produced with the additive color change (alpha blending) with cyan (53% transmittance).


Akiyoshi Kitaoka: Color Illusions 16

https://www.illusionsindex.org/i/grey-strawberries

https://journals.sagepub.com/doi/pdf/10.1177/2041669517749601

The Theremin

Discover: Creepy Music and Soviet Spycraft: The Amazing Life of Leon Theremin

In Voluptas Mors

At first glance at this photograph, the viewer sees a skull, but deeper observation reveals it is actually composed of seven nude female models. Dalí designed the precise sketch for this work and it took the photographer Philippe Halsman over three hours to realize the image. The photograph's title is loosely translated as "Voluptuous Death". Dalí said, "I value death greatly. After eroticism, it's the subject that interests me the most."

The piece is an excellent example of Dalí's many experiments with optical effects and visual perception. Here one can see a skull or the seven nudes, but not both at the same time. The particularities of our individual, visual perception was something Dalí was very interested in because he felt we could find clues about our inner psyches through the different associations artwork evoked. He used these double-image experiments in dozens of works throughout much of his career.

Halsman was an established photographer and photojournalist who holds the record for the largest number of Time magazine covers photographed by any one person. After meeting in 1941, Dalí and Halsman worked together for 37 years, until the end of Halsman's life. Their cooperation also produced the famous photograph Dalí Atomicus (1948), and the book Dalí's Mustache (1954), which featured 28 different photographs of the artist's iconic facial hair.

(1) The Art Story: Salvador Dali
Scene360: Dali's Skull Illusion Still Inspires