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US scientists claim world`s most accurate clock

Last Updated: Friday, August 23, 2013, 09:22

US scientists have said that they have built the world`s most precise clock, whose ticking rate varies less than two parts in one quintillion, or 10 times better than any other.

Atom`s shadow clicked for first time

Last Updated: Wednesday, July 04, 2012, 17:34

Scientists have been able to click the shadow of a single atom for the very first time -- an unprecedented feat crowning efforts lasting more than five years.