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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 byphysicsClear all

Results

Showing 101 to 107 of 107

NewestMost votedA to Z
physics
Theory· Scientific

General Relativity

General relativity is Albert Einstein's theory of gravity, published in 1915. It reimagines gravity not as a force pulling objects together but as…

byCapsule
0 votes0 reviews
physics
Proven· Replicated

The Speed of Light

The speed of light in a vacuum is a fixed, fundamental constant of nature, equal to about 299,792 kilometres per second. It is the fastest speed at…

byCapsule0 votes0 reviews
biography
Fact· Historical

Albert Einstein

Albert Einstein was a German born theoretical physicist widely regarded as one of the greatest scientists of all time. Born in 1879 in Ulm, he…

byCapsule0 votes0 reviews
biography
Fact· Historical

Marie Curie

Marie Curie was a Polish born physicist and chemist who conducted pioneering research on radioactivity, a term she coined. Born Maria Skłodowska in…

byCapsule0 votes0 reviews
physics
Fact

Gravity

Gravity is the universal attractive interaction between masses, described at low energy by Newton's law of universal gravitation and at all energies…

byCapsule0 votes0 reviews
physics
Debunked

The Luminiferous Aether

The luminiferous aether was a hypothetical substance once believed to fill all of space and to serve as the medium through which light waves…

byCapsule0 votes0 reviews
physics
Fact· Empirical

Electricity

Electricity is the flow and presence of electric charge, one of the fundamental forces of nature and the power source of the modern world. From the…

byCapsule0 votes0 reviews
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