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Yes, the concept of a second has been redefined over time. The original definition of a second was decided by astronomers, and defined as 1/86 400 of the mean solar day. The most current definition relies on energy state transitions of a cesium atom. The original and current definition can be found here: http://physics.nist.gov/cuu/Units/second.html
Who wouldn't like to take their own car out to real racetracks? Fly along at 130 Mph in their XXX HP Miata/Teg/Imepreza/{Your car here}, at Laguna Seca? Excellent graphics, phenomenal car simulation, endless fun. C'mon is their really any contest?
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Yes, the concept of a second has been redefined over time.
The original definition of a second was decided by astronomers, and defined as 1/86 400 of the mean solar day.
The most current definition relies on energy state transitions of a cesium atom.
The original and current definition can be found here: http://physics.nist.gov/cuu/Units/second.html
Who wouldn't like to take their own car out to real racetracks? Fly along at 130 Mph in their XXX HP Miata/Teg/Imepreza/{Your car here}, at Laguna Seca?
Excellent graphics, phenomenal car simulation, endless fun.
C'mon is their really any contest?