ExplainerTools

Science · Interactive demo

Why is the sky blue but sunsets red?

Drag the sun to the horizon. Its light crosses nearly forty times more air, and the blue scatters out before it reaches you.

Created by ExplainerTools.

What you’ll explore

This interactive demo gives you a visual way into science. The key ideas include light, color, atmosphere, scattering.

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Change one thing and see why.

Three new models, each with a 30-second film. Watch the question, then play with the answer.

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A collection for the curious.

ExplainerTools collects interactive explainers, visual essays, and educational videos that help an idea make sense. Browse by subject, follow a topic, or find a creator whose way of explaining speaks to you.

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Every entry credits its original creator. Supported experiences play here, with a link to the creator’s original work available in the player. Inclusion does not imply a partnership or endorsement.

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Views, likes, and bookmarks count activity on ExplainerTools. They don’t include views or likes from a creator’s website or social accounts. Newest means most recently added to this collection. Ties are ordered by date added, then our curated catalog order.

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