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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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  • FactTardigrade
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The library

Capsules

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

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered byFactengineeringenergyClear all

Results

Showing 1 to 2 of 2

NewestMost votedA to Z
engineering
Fact

The Electricity Grid

The network generating, transmitting and distributing electrical power. It is the largest machine ever built, it must balance supply and demand…

byCapsule
0 votes0 reviews
engineering
Fact

The Internal Combustion Engine

An engine in which fuel burns inside the working chamber, pushing a piston or turning a rotor directly. It displaced the steam engine because it is…

byCapsule0 votes0 reviews