Assertion: time dilation | /r/CapableOf | become important
Facets:
Source sentences:
text: It is only when an object approaches speeds on the order of 30,000 km/s (1/10 the speed of light) that time dilation becomes important.
text: It is only when an object approaches speeds on the order of 30,000 kilometres per second (67,000,000 mph) (10% the speed of light) that time dilation becomes important.