relativity

Motion affects measurement

Relativity is the condition of being relative—dependent on perspective or frame of reference rather than absolute.

In physics, Einstein's theories of relativity describe how measurements of space, time, and motion depend on the observer's position and velocity.

Special relativity addresses objects moving at constant speeds; general relativity extends this to gravity and acceleration.

Outside physics, relativity often means that judgments vary by context: Morality has a certain relativity across cultures.

The casual use can imply that nothing is fixed or universally true.

spacetime

spacetime

Merged dimensional framework

four-dimensional · manifold · tensor · geodesic · metric · singularity · dimensionality · causality · chronology · simultaneity

theory

Einstein

Byword for genius

postulate · covariance · inertial · special · general · principle · E=mc² · mass-energy · photoelectric · Nobel

philosophy

perspective

Attitude or spatial rendering

viewpoint · perception · standpoint · comparative · situational · truth · objectivity · epistemology · postmodernism · constructivism

gravity

gravitational

Relating to mass-based attraction

freefall · acceleration · weight · tidal · gravitational-wave · geodesy · planetary · galactic · black-hole · graviton

cosmology

universe

Complete system or domain

inflation · Hubble · galaxy · quasar · supernova · nebula · multiverse · astrophysics · observatory · telescope

kinship

kinship

State of being related

genealogy · bloodline · descendants · forebears · kindred · clan · tribe · dynasty · household · siblings

Categories
Opposites
absoluteness

relativityabsoluteness

Total, unqualified nature

absolutism · universality · invariance · Newtonian mechanics · objectivity

certainty/fixedness

relativitycertainty

Total absence of doubt

definiteness · determinacy · fixity · stability · rigidity

SIGNIFICANCE (as importance)

relativityinsignificance

Lack of consequence or weight

meaninglessness · irrelevance · inconsequence

Phrases
Family

relativism, relativistic, relativities

Familiarity
Top 100,000
Profile
Used worldwide · Timeless · Abstract · Rated G