429 Trillion News Today : Breaking News, Live Updates & Top Stories | Vimarsana

>> okay, so, it's daylight savings time. but what about your wristwatch? what about your cell phone? what about what these devices say? chicago asks the age old question and the pentagon is looking for the answer. this high-tech lab of lasers and mirrors measures the movement of atoms. 429 trillion atomic vibrations add up to just one second. >> that vibration is sort of the smallest unit of time that we can actually measure. >> their goal is to make the most precise clock in the world. currently, the source for precision time is gps satellites, which contain atomic clock used to synchronize c...

Every month? ppg correspondent barbara starr tells us about it. ♪ >> reporter: chicago asks the age old question and pentagon is looking for the answer. this high-tech lab of lasers and mirrors measures the movement of atoms, 429 trillion atomic vibrations add up to just one second. >> that vibration is sort of the smallest unit of time we can actually measure. >> reporter: their goal is to make the most precise clock in the world. currently the source for precision time is gps satellites which contain atomic clocks used to synchronize clocks on the ground. but the pentagon worries the satel...

Mirrors measures the movement of atoms, 429 trillion atomic vibrations add up to just one second. >> that vibration is sort of the smallest unit of time we can actually measure. >> reporter: they're goal is to make the most precise clock in the world. currently the source for precision time is gps satellite, which contain atomic clocks used to synchronize clocks on the ground, but the pentagon worries the satellites could be jammed, so they want an even more accurate alternative. your wristwatch loses a second every 30 days. clocks on gps satellites lose a second every 30,000 years. this progr...