ExplainerToolsOriginals

Three original visual experiments

Big ideas, made visible.

Watch each short film, switch between landscape and portrait, then open the interactive demo to try the model yourself. These are original ExplainerTools lessons inspired by independent creators and published research.

Change a variable. Watch the consequence. Understand why.

The films

British narration · captions included · two formats

01 · Camera timing

Why does a spinning propeller look bent?

A camera records rows at different moments. See how motion during the scan reshapes a straight blade.

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Change: blade speed and row readout time. Notice: the captured blade bends as it turns between rows; global exposure removes that timing distortion.

A short-exposure analytic model; exposure blur is a separate effect.

02 · Growth patterns

Why do sunflower seeds make spirals?

Turn the angle between each new seed and watch simple fractions leave spokes while the golden-angle placement spreads seeds around the center.

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Change: the divergence angle. Notice: rational turns make aligned spokes, while the golden-angle preset distributes points without those repeated alignments.

A mathematical placement model inspired by plant patterns; real plants vary.

03 · Collective motion

How can a traffic jam travel backward?

Add cars to a loop and follow one small slowdown through the traffic and its space-time trail.

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Change: vehicle density and random slowing. Notice: a queue forms without a crash or roadblock, and its wave can move upstream while cars move forward.

A simplified Nagel–Schreckenberg traffic model; randomness and density are causes in the model.

Original builds & source inspiration

Authored here: all three interactive models and narrated films are original ExplainerTools work. These experiences do not reproduce the source creators’ code, text, or artwork. Source links recognize the ideas and research that informed each lesson.

Added to the creator collection: source works by Ryan Sael, Nehal Udyavar / Newt Interactive, and Dirk Brockmann. Browse Starlink, The Story of Hemoglobin, and Horde of the Flies.