Category:Time
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Time is a measure of duration. It can mark change by operational definition, or by other technologies. By the 20th century, Albert Einstein came to regard time as a fourth dimension, along with space, within a spacetime.
Subcategories
This category has the following 9 subcategories, out of 9 total.
Pages in category "Time"
The following 10 pages are in this category, out of 10 total.
