# Nordtvedt effect

> English word · Noun

## Definitions
1. A test of the strong equivalence principle of general relativity that relies on detecting polarization in the orbit of the moon in the direction of the sun.

## Etymology
Named after Kenneth Nordtvedt

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/nordtvedt-effect