Atomic Time is changing!

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I was just getting acquainted with¬†caesium standard clocks, now they’re changing to strontium.

At the heart of this new clock is the element strontium. Inside a small chamber, the strontium atoms are suspended in a lattice of crisscrossing laser beams. Researchers then give them a little ping, like ringing a bell. The strontium vibrates at an incredibly fast frequency. It’s a natural atomic metronome ticking out teeny, teeny fractions of a second.

This new clock can keep perfect time for 5 billion years.

Amazing!

http://www.npr.org/2014/11/03/361069820/new-clock-may-end-time-as-we-know-it

With HealthKit Apple is sweating the details

This blew my mind. Apple is really sweating every detail about HealthKit. Would be interesting to see what Android is doing…

If the user grants permission to read a data type, you can query that data from the HealthKit store. Unfortunately, even knowing that the user has denied your request to read a particular type of data may reveal potential health problems. Therefore, your app cannot determine whether or not the user has granted permission to read data. If you are not given permission, it simply appears as if there is no data of the requested type in the HealthKit store.

Apple HealthKit

 

I like this. This is the first stand against “if you have nothing to hide” mentality. Good on you Apple.