Capsule
DonateLog inCreate account
Menu

Navigation

  • Main page
  • Capsules
  • Learning
  • Mapping
  • Rankings
  • Organizations
  • Create
  • Forums
  • Research

Interaction

  • Messages
  • Verify
  • Help
  • About Capsule

Display

Appearance

Environment

EnvironmentsDefault
Capsule
Log in

Navigation

  • Main page
  • Capsules
  • Learning
  • Mapping
  • Rankings
  • Organizations
  • Create
  • Forums
  • Research

Interaction

  • Messages
  • Verify
  • Feedback
  • Help
  • About Capsule

Truth Classification

  • Fact
  • Theory
  • Hypothesis
  • Proven
  • Contested
  • Debunked
How classification works

Capsule of the Day

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

New in the Library

  • FactTardigrade
  • FactMonarch Butterfly
  • FactSpider

Capsule

© 2026 Solis Holdings Group Inc. All rights reserved.

Built by Solis Dev, a technology studio operating under Solis Holdings Group Inc.

  • Policy
  • Terms of Use
  • Methodology
  • Corrections
  • Non-partisanship
  • Transparency
  • Developers
  • About
  • Discord
  • Sitemap

Capsule, the capsule-pill mark, and the clock logo are trademarks of Solis Holdings Group Inc. All content, source code, and design assets are the exclusive property of Solis Holdings Group Inc., unless otherwise noted. Unauthorized reproduction is prohibited.

The library

Capsules

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

All1,028Fact599Proven130Theory89Hypothesis71Contested90Debunked48
geography236biology88physics67history54medicine45astronomy33psychology26mathematics26chemistry20engineering20astrophysics19neuroscience19anthropology18art18
Filtered bymaterials-scienceClear all

Results

Showing 1 to 12 of 12

NewestMost votedA to Z
materials science
Fact

Paper

A sheet of matted plant fibre. It replaced every earlier writing surface because it was far cheaper, and the consequences of cheap writing material…

byCapsule
0 votes0 reviews
materials science
Fact

Textiles

Fabrics made from fibres. Textile production drove the first industrial mechanisation, it remains among the largest manufacturing sectors, and the…

byCapsule0 votes0 reviews
materials science
Fact

Polymers

Molecules built from many repeating units linked in chains. They include most plastics, all proteins and nucleic acids, rubber and cellulose, and…

byCapsule0 votes0 reviews
materials science
Fact

Steel

An alloy of iron with a small and controlled quantity of carbon. That small addition transforms a soft metal into the most widely used structural…

byCapsule0 votes0 reviews
materials science
Fact

Glass

A solid that lacks the ordered internal arrangement of a crystal, formed by cooling a liquid fast enough that its atoms cannot arrange themselves. It…

byCapsule0 votes0 reviews
materials science
Fact

Concrete

A composite of cement, water, sand and stone that begins as a liquid and hardens into artificial rock. It is the most used manufactured material on…

byCapsule0 votes0 reviews
materials science
Theory

Band Theory of Solids

The account of why some solids conduct electricity and others do not, in terms of allowed and forbidden ranges of electron energy created by the…

byCapsule0 votes0 reviews
materials science
Theory· Scientific

Metamaterials

A metamaterial gets its properties from its structure rather than its chemistry. By arranging elements smaller than the wavelength of the wave…

byCapsule0 votes0 reviews
materials science
Proven· Replicated

Semiconductor Doping

Doping is the deliberate introduction of impurities into a semiconductor in order to control its electrical behaviour. Every transistor, and…

byCapsule0 votes0 reviews
materials science
Proven· Replicated

Shape-Memory Alloys

A shape-memory alloy is a metal that returns to a remembered shape when heated, having been deformed while cool. The effect looks like a trick and is…

byCapsule0 votes0 reviews
materials science
Contested

Room-Temperature Superconductors

A material that conducted electricity with no resistance at ordinary temperatures and pressures would be genuinely transformative, eliminating losses…

byCapsule0 votes0 reviews
materials science
Contested

Graphene

Graphene is a single layer of carbon atoms arranged in a hexagonal lattice, one atom thick. Its measured properties are extraordinary and not in…

byCapsule0 votes0 reviews