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.
This category has the following 46 subcategories, out of 46 total.
The following 56 pages are in this category, out of 56 total. This list may not reflect recent changes.
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.
This category has the following 46 subcategories, out of 46 total.
The following 56 pages are in this category, out of 56 total. This list may not reflect recent changes.