Relativity
The theory of the universe developed by Albert Einstein, comprising two parts: special relativity and general relativity, which deal with the relationship between space and time, and the nature of gravity.
Special relativity deals with objects moving at constant speeds and describes the relationship between space and time. General relativity extends this to include acceleration and gravity, describing gravity as the curvature of spacetime caused by mass and energy.
Word family
- relative (adjective): Considered in relation or in proportion to something else.
- relativist (noun): A proponent of relativity theory.
- relativistic (adjective): Relating to the theory of relativity.
Collocations
- special relativity
- general relativity
- theory of relativity
- quantum relativity
Example sentences
- "Einstein's theory of Relativity fundamentally changed our understanding of space, time, and gravity." Referring to a scientific theory.
- "The concept of time dilation, where time passes differently for observers in relative motion, is a key prediction of special Relativity." Explaining a concept.
Memory hook
Think 'RELATIVE' measurements of time and space. Everything is relative! Relative Measurements
When not to use
Do not use 'relativity' to mean simply 'relative' or 'subjective' in a philosophical sense. It refers specifically to Einstein's scientific theories. Avoid using it casually.
Fun facts
- One of the most famous equations, E=mc², comes from Einstein's special theory of relativity.
- GPS systems rely on both special and general relativity to function accurately, as time runs slightly differently on satellites than on Earth.
Related words
Astrophysics, Cosmology, Black Hole, Singularity, Gravitational, Redshift
Explore more words
relativism, theory, metaphysical, light-year, universe, black hole
Also appears in
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