Category Archives: Biology

Dot to Not

Friday, 3rd Oct, 2025 by Krilling for Company in Optical Illusions, Psychology and tagged Akiyoshi Kitaoka, disappearing dot illusion, disappearing dots, dissolving dots, dots that disappear, grid, Ninio Extinction Illusion | Leave a comment

Dissolving Dot Illusion by the Japanese psychologist Akiyoshi Kitaoka

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Elsewhere Other-Accessible…

• This Illusion Knows When You Are Looking at It, Slate, 13ix16

Think Rhynch

Monday, 11th Aug, 2025 by Krilling for Company in Biology, Natural History, Photography and tagged black-and-rufous elephant shrew, elephant shrews, insectivores, Macroscelididae, Philadelphia Zoo, Rhynchocyon petersi, sengis | Leave a comment

Black-and-rufous elephant shrew, Rhynchocyon petersi (Wikipedia)

Animated Album

Saturday, 19th Jul, 2025 by Krilling for Company in Album Art, Music, Optical Illusions, Psychology and tagged Animal Collective, experimental music, Merriweather Post Pavilion | Leave a comment

The optically illusory album Merriweather Post Pavilion (2009) by Animal Collective

Perforative Performativity

Sunday, 29th Jun, 2025 by Krilling for Company in Botany, Flowers, Natural History, Photography and tagged common St. John's wort, flower photography, Hypericaceae, Hypericum perforatum, perforate St. John's wort, St John's wort, yellow flower, yellow flowers | Leave a comment

St John’s Wort, Hypericum perforatum (image Wikipedia)

Hurtica

Saturday, 31st May, 2025 by Krilling for Company in Art, Biology, Botany and tagged common nettle, German botanist, Große Brennnessel, nettles, Otto Wilhelm Thomé, plant illustration, Urtica dioica | Leave a comment

Urtica dioica by the German botanist Otto Wilhelm Thomé (1840-1925)

Trigintally Toxic Text

Sunday, 23rd Feb, 2025 by Krilling for Company in Biology, Conchology, Marine Biology, Mathematics, Science, The Sea and tagged cellular automata, cone shells, Conus textile, molluscs, Rule 30, sea-shells, textile cone, toxic molluscs, toxic shellfish | Leave a comment

The highly toxic Textile Cone, Conus textile (Wikipedia)

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Rule 30 cellular automaton (Wikipedia)

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Two views of toxic C. textile (Wikipedia)

Tri-Fi Defies the Eye

Tuesday, 4th Feb, 2025 by Krilling for Company in Fibonacci Sequence, Geometry, Mathematics, Optical Illusions and tagged 13x5 triangle, fake triangle, Fibonacci numbers, geometric dissections, geometric tricks, geometrical illusions, missing square puzzle | Leave a comment

The Missing Square Puzzle

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An animation of the puzzle

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Elsewhere Other-Accessible…

• Missing square puzzle — all is explained at Wikipedia

Swift Lift

Monday, 2nd Dec, 2024 by Krilling for Company in Biology, Natural History, Ornithology, Photography, Science and tagged Alpine swift, Apodidae, Apus melba, bird photography, swifts, Tachymarptis melba | Leave a comment

The Grauniad says that this is an alpine swift, Tachymarptis melba, but it looks like a common swift, Apus apus, to me (Photograph: Buiten-Beeld/Alamy via Grauniad)

(click for larger)

Mathematical Me-Meme

Thursday, 7th Nov, 2024 by Krilling for Company in Conchology, Geometry, Mathematics, Natural History, Photography and tagged cuboctohedron, Portuguese dictionary, snail | Leave a comment

A performative pile consisting of a snail on a cuboctohedron on a Portuguese dictionary

Triatom

Thursday, 17th Oct, 2024 by Krilling for Company in Biology, Botany, Marine Biology, Microbiology, Photography, Science, The Sea and tagged algae, diatoms, marine diatoms, microphotography, phytoplankton, triangular diatoms, Triceratium morlandii | Leave a comment

The marine diatom Triceratium morlandii (Wikipedia)