Definition:Time/Fourth Dimension
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Definition
In the Theory of Relativity, it is convenient to consider time as another dimension in addition to, and treated similarly to, the $3$ dimensions of ordinary space.
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Historical Note
The treatment of time as the $4$th dimension originates with Albert Einstein.
While introduced as a mathematical convenience, the concept took hold in popular culture as a pseudo-scientific backing for an entire subgenre of science fiction: the time-travel story.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $3$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $3$