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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
Filtered byphysicsClear all

Results

Showing 81 to 100 of 107

NewestMost votedA to Z
Theory

Thermodynamics

Thermodynamics is the branch of physics concerned with heat, energy, and work, and how they transform from one form to another. Its laws are among…

byCapsule
0 votes0 reviews
Jun 11, 2026
Theory

Electromagnetism

Electromagnetism is the branch of physics that describes the forces between electric charges and the deep connection between electricity and…

byCapsule0 votes0 reviewsJun 11, 2026
Theory

Atomic Theory

Atomic theory is the idea that all matter is made up of tiny particles called atoms. It is one of the most important and successful ideas in all of…

byCapsule0 votes0 reviewsJun 11, 2026
Theory· Emerging

String Theory

String theory is a theoretical framework that attempts to unify all the forces and particles of nature, including gravity, into a single description.…

byCapsule0 votes0 reviewsJun 3, 2026
Fact· Empirical

The Northern Lights

The northern lights, known scientifically as the aurora borealis, are one of nature's most spectacular displays. Shimmering curtains of green, pink,…

byCapsule0 votes0 reviewsMay 28, 2026
Debunked

Cold Fusion at Room Temperature

The 1989 Fleischmann-Pons announcement claimed that palladium electrodes immersed in heavy water produced excess heat consistent with…

byCapsule0 votes0 reviewsMay 23, 2026
Hypothesis

The Simulation Hypothesis

The simulation hypothesis is the proposal that the reality we experience might actually be an artificial simulation, such as an immensely…

byCapsule0 votes0 reviewsMay 20, 2026
Fact· Empirical

The Sun

The Sun is the star at the centre of the Solar System, a vast sphere of hot plasma whose gravity holds the planets in their orbits and whose light…

byCapsule0 votes0 reviewsMay 1, 2026
Theory

Dark Matter: The Leading Theoretical Framework for Missing Mass in the Universe

Dark matter is the leading theoretical framework proposed to explain gravitational effects observed in galaxies and galaxy clusters that cannot be…

byCapsule0 votes0 reviewsApr 19, 2026
Fact· Empirical

Rainbow

A rainbow is a band of colour that appears in the sky when sunlight is bent and split by water droplets in the air. Familiar and beloved across every…

byCapsule0 votes0 reviewsApr 14, 2026
Theory· Scientific

Special Relativity

Special relativity is the theory of space and time that Albert Einstein published in 1905. It revolutionized physics by showing that measurements of…

byCapsule0 votes0 reviewsApr 10, 2026
Contested

The Anthropic Principle

The anthropic principle concerns the striking observation that the universe appears remarkably fine tuned for the existence of life. Many of the…

byCapsule0 votes0 reviewsApr 8, 2026
Fact· Empirical

Lightning

Lightning is a sudden, powerful discharge of electricity in the atmosphere, one of nature's most dramatic and dangerous phenomena. A single bolt can…

byCapsule0 votes0 reviewsApr 3, 2026
Contested

The Multiverse

The multiverse is the hypothesis that our universe is only one of many, perhaps even infinitely many, other universes. It is taken seriously by many…

byCapsule0 votes0 reviewsMar 30, 2026
Contested

Interpretations of Quantum Mechanics

Quantum mechanics is the most successful physical theory ever devised, predicting the behavior of atoms, light, and subatomic particles with…

byCapsule0 votes0 reviewsMar 24, 2026
Fact· Empirical

Black Hole

A black hole is a region of space where gravity is so intense that nothing, not even light, can escape once it passes a certain boundary. They are…

byCapsule0 votes0 reviewsMar 19, 2026
Hypothesis

Wormholes

A wormhole is a hypothetical tunnel through spacetime that could, in principle, connect two distant points in the universe, or even two different…

byCapsule0 votes0 reviewsFeb 26, 2026
Proven· Replicated

Conservation of Energy

The law of conservation of energy states that energy cannot be created or destroyed, only changed from one form into another. The total amount of…

byCapsule0 votes0 reviewsFeb 22, 2026
Theory· Mathematical

Chaos Theory

Chaos theory is the branch of mathematics that studies systems whose behaviour is exquisitely sensitive to their starting conditions. Such systems…

byCapsule0 votes0 reviewsFeb 17, 2026
Fact· Empirical

The Atom

The atom is the basic building block of ordinary matter, the smallest unit of a chemical element that retains its properties. Everything you can see…

byCapsule0 votes0 reviewsFeb 11, 2026
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