Map of driving directions from Spring, TX to Houston, TX. Click here to show map. Drag the line on the map to calculate the driving distance for a different route. If you want to verify these driving directions or look for another possible route, you can try. Google Maps, Bing Maps, or MapQuest.
The second (symbol: s) (abbreviated s or sec) is the base unit of time in the International System of Units (SI).
The use of the word second in English began in the late 16th century. The definition remained unchanged (and still applies in some astronomical and legal contexts) from 1000 until 1960, at which time it was defined as the period of the Earth's orbit around the sun in the year 1900.