Dictionary

action-at-a-distance

Forces acting from one location to another without the need for any material connection, and without any delay – for instance, the Newtonian gravitational force with which even distant bodies in empty space can exert influence on each other.

What is Einstein Online?

Einstein Online is a web portal with comprehensible information on Einstein's theories of relativity and their most exciting applications from the smallest particles to cosmology.

Einstein Online is provided by the

Max Planck Institute for Gravitational Physics
(Albert-Einstein-Institut)

About Einstein Online

Includes information on our authors and contributing Institutions, and a brief history of the website.

Glossary

More than 400 entries from "absolute zero" to "XMM Newton" - whenever you see this type of link on an Einstein Online page, it'll take you to an entry in our relativistic dictionary.

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