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Capsule of the Day

DebunkedThe PolygraphThe instrument popularly called a lie detector, which records breathing, blood pressure, pulse and skin conductance dur…

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The library

Capsules

1,028 capsules, each one classified by the strength of its evidence.

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered byProvenchemistryphysicsClear all

Results

Showing 1 to 3 of 3

NewestMost votedA to Z
chemistry
Proven

Spectroscopy

Every element absorbs and emits light at a unique set of wavelengths. Reading those wavelengths identifies what something is made of without touching…

byCapsule
0 votes0 reviews
chemistry
Proven

X-ray Crystallography

A technique for determining the arrangement of atoms in a solid by firing X-rays at a crystal and reading the pattern they scatter into. It has…

byCapsule0 votes0 reviews
chemistry
Proven· Replicated

Conservation of Mass

The conservation of mass is the principle that, in any ordinary physical or chemical change, matter is neither created nor destroyed. The total mass…

byCapsule0 votes0 reviews