Science Atlas

How We Know What We Know
Atlas

Atlas Trails

A trail is a short, ordered route through the atlas. Each stop says why it comes next, so a journey reads as an argument rather than a list. Start one, leave, and come back: your place is kept in this browser, and you do not need an account for that.

How Theories Fall

Four scientific theories replaced by better ones, and what it actually took each time: new evidence, a missing mechanism finally supplied, or a rival account that still has not been settled.

7 stops

Fields Assembled, Not Founded: Earth Science and Solid-State Physics

Not every field in this atlas began with one founder and one date. This wave minted two disciplines, Earth Science and Solid-State Physics, that instead consolidated older, separately grown branches into a single named...

7 stops

The Instruments That Hit Their Limits

Four instruments this wave researched in depth, each one built to work around a hard physical limit: the telescope's aperture-resolution tradeoff, the cyclotron's relativistic ceiling and the synchrotron built to beat...

5 stops

How We Know: Five Experiments That Settled a Question

How does anyone actually know what they claim to know. This trail follows five experiments where a careful test settled a real question or overturned an assumption science had been carrying: a search for motion through...

5 stops

Credit Where Credit Was Due

Five results everyone half-remembers, and the fuller story behind who actually did the work: Scheele, Priestley and Lavoisier on oxygen; Rosalind Franklin's Photograph 51; Harvey Fletcher's uncredited share of the oil...

5 stops

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