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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 byengineeringtechnologyClear all

Results

Showing 1 to 10 of 10

NewestMost votedA to Z
engineering
Fact

Refrigeration

Removing heat from a space to keep it below the surrounding temperature. It is the technology that changed what people eat more than any other, and…

byCapsule
0 votes0 reviews
engineering
Fact

Navigation

Determining position and finding a route. For most of history the difficult part was not direction but position, and specifically longitude, which…

byCapsule0 votes0 reviews
engineering
Fact

Aviation

Powered flight through the atmosphere. It went from first sustained flight to routine intercontinental travel within sixty years, and its safety…

byCapsule0 votes0 reviews
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…

byCapsule0 votes0 reviews
engineering
Proven

Satellite Navigation

Knowing where you are anywhere on Earth to within a few metres, by timing radio signals from satellites. It works because atomic clocks are…

byCapsule0 votes0 reviews
engineering
Proven

The Transistor

A device that lets a small electrical signal control a large one, with no moving parts, made from a crystal. It replaced the vacuum tube, made…

byCapsule0 votes0 reviews
engineering
Fact· Empirical

Social Media

Social media refers to the online platforms and apps that let people create and share content and connect with one another. In barely two decades, it…

byCapsule0 votes0 reviews
engineering
Fact· Empirical

Electric Vehicles

Electric vehicles, or EVs, are cars and other vehicles powered by electric motors and batteries instead of by burning petrol or diesel. Once a niche…

byCapsule0 votes0 reviews
engineering
Fact· Empirical

Artificial Intelligence

Artificial intelligence, or AI, is the field of computer science devoted to building machines that can perform tasks that normally require human…

byCapsule0 votes0 reviews
engineering
Fact· Historical

The Internet

The Internet is a global system of interconnected computer networks that lets billions of devices around the world communicate and share information.…

byCapsule0 votes0 reviews