#optical illustion

[cf-12]

_seashellResonance();

[pin-striped-soup]

[mannlibrary]

Excerpt and illustration from A text-book of psychology. Edward Bradford Titchener. 1909. Drawn by R. Gudden, Frankfurt a. M.

[k00263500]

Experiments with expressing movement in shapes, simple exponential roatations over time.

[nemfrog]

“Which is the larger?” Science Gossip. May 1900.

Internet Archive

[jennaismaking]

my dad likes to cut cardboard while he watches tv, so i took his ‘confetti’ and made this 20x14in mosaic

can you tell which product packages were cut up to make this?

[86era]

Marcello Morandini

[jacobjoaquin]

Iris, 20181110