Your Phone Uses Einstein's Theory Every Day

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Every single day, atomic clocks orbiting in space gain 38 microseconds compared to clocks on the ground. It sounds like nothing, but at the speed of light, that tiny error throws your GPS off by 11 kilometers. Watch to see how engineers deliberately slow satellite clocks down to survive cosmic time warp. #Astronomy #EverydayPhysics #TechSecrets #SciComm #DeepSpace

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00:00وإذا كنت صنعت مكان ما في 3 متى

00:02لكن لا تحلل سوى على أرد المدينة كل مدينة

00:05يجب أن تكون مدين من 10 إلى ما لديه

00:09هناك ماذا

00:10قدرات التوبيل المحاولات 20,000 قمتين من المعطب المدينة

00:15هناك سوى جزرق

00:17ولم تفضل الجزرقين سوى الوقت

00:20لا تفضل أبداً

00:22لا تفضل أي شيئاً

00:24Each satellite's atomic clock gains 38 microseconds every day compared to clocks on the ground

00:3038 microseconds sounds like nothing

00:33But GPS calculates your position using the speed of light

00:37At 299,792 kilometers per second

00:4238 microseconds of time error translates to 11 kilometers of positional error

00:47Every single day

00:49Compounding

00:51So engineers deliberately slow the satellite clocks down before launch

00:56Programming in Einstein's correction before the satellites even leave the ground

01:00Your GPS works because we understood that time is not the same everywhere

01:07Einstein proved it in 1915

01:09We didn't believe it until we needed it to find our way home

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