Experiment charges your Tesla with footsteps
Eventually, you might not have to find a charging station when you park your electric car downtown — pedestrians could do the work instead. Pavegen has teamed up with Tesla to show off an experimental charger that tops up your EV through kinetic energy from footsteps. You’d need “several hundred thousand” steps just to drive a Model S for 20 minutes in a downtown area, the company tells PSFK, so you won’t power your vehicle just by running in place. However, this isn’t as daunting a challenge as it sounds. Many urban hubs are chock-full of foot traffic, and a sufficiently long stretch of sidewalk could speed up the charging time. It’ll be a long while before you see this in action. Pavegen is crowdfunding the technology, and it’ll depend on adoption from cities and corporate offices after that. If all goes well, though, people power might be all you need to complete your commute home.
Filed under: Transportation
Via: PSFK
Source: Pavegen (Crowdcube), YouTube
How to Get the Most Accurate Heart Rate Reading on Apple Watch [iOS Blog]
Apple Watch features a heart rate monitor to help guide you through your workout sessions, tracking your heart rate while you exercise to better determine the amount of calories you burn during your activities.
The monitor also automatically tries to measure your heart rate every 10 minutes, but doesn’t record the data if your arm is moving. That is why your Health app doesn’t reflect a reading at every 10 minutes on the dot, but shows varying intervals of readings.
If you want to get a quick, accurate measurement of your heart rate manually you can do so in Glances.
The heart rate sensor is on the backside of the Apple Watch case and is made up of two different sets of special lights that monitor the blood flow through your wrist. Because the sensors absorb light through your skin, there are a few factors that affect the accuracy of a heart rate reading.
By following a few tips, as well as calibrating Apple Watch for workouts, you will get a better heart rate reading, thus improving the device’s ability to more determine how many calories you burn.
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