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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
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Results

Showing 1 to 3 of 3

NewestMost votedA to Z
music
Fact

Harmony

The combination of simultaneous pitches, and the system governing which combinations are used and how they follow one another. It is the organising…

byCapsule
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music
Fact

Musical Instruments

Objects made or adapted to produce musical sound. They are among the oldest artefacts of human culture, and the ways they are classified reveal how…

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music
Theory

Equal Temperament

Every note on a modern piano is slightly out of tune, deliberately and by a known amount. Equal temperament divides the octave into twelve identical…

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