Posts Tagged ‘Mobile



Have (rather had, before it got stolen) an ipod touch on which I played super games. Thanks to the accelerometer.

I could move the pac-man just by tilting the iPod. I could play bowling by holding the iPod in one hand and then doing the bowling action. All this, thanks to an accelerometer inside. What is an accelerometer?

An accelerometer is a device that measures proper acceleration (speed and direction, remember!!!); the acceleration it experiences relative to freefall.

An accelerometer measures proper acceleration which is the acceleration it experiences relative to freefall, and is the acceleration that is felt by people and objects. Put another way, at any point in spacetime the equivalence principle guarantees the existence of a local inertial frame, and an accelerometer measures the acceleration relative to that frame.

Conceptually, an accelerometer behaves as a damped mass on a spring. When the accelerometer experiences an acceleration, the mass is displaced to the point that the spring is able to accelerate the mass at the same rate as the casing. The displacement is then measured to give the acceleration.


Why does vibration mode gets disabled when phone is charging?

Have seen this often. My old phone switched back to audible mode when I kept it for charging and there an alarm was supposed to ring. My new phone does not bother to alert me at all (and hence I wake up late). So was just trying to figure out why should the vibration mode get disabled when the phone is charging.

Here’s an explanation from amazon

When the battery is charging, your phone goes back to non-vibrating mode because the vibrator draws much more current than the ringer.  That would interfere with the charging cycle.  On some phones, the vibrator mechanism is in the battery itself, and is disabled when it’s on charge.

So what’s this blog about?

Another attempt? Well yes. Attempting to figure out another sustainable model (there are some other attempts going on parallel-ly). Well, we have a lot of questions in mind. we read up stuff, we do some research to find answers to these questions. This is an attempt to publish that little 15-20 minute research.
June 2017
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