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Milliseconds are used when something is too quick to measure in seconds or where you need more accuracy to be able to differentiate two results. Say the 100 metre sprint for instance, at olympic level (in or around). Hypothetically say that all 8 runner's times were actually 9.6, 9.7, 9.9, 10.053, 10.2, 10.23, 10.45, 10.474. If all of these were rounded to just seconds they would all finish in 10 seconds and you would have 8 people in 1st place. Therefore having milliseconds, opr even a shorter time than seconds allows more precise and accurate values.

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11y ago

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