send link to app

eTesla app for iPhone and iPad


4.0 ( 7440 ratings )
Utilities Education
Developer: Straccia Emidio Co.Sei sistemi
Free
Current version: 1.0, last update: 7 years ago
First release : 20 Nov 2014
App size: 13.73 Mb

By using data from the phone internal compass,
This app can measure the magnetic field generated from metals
Or high electromagnetic emission from High Voltage line ,Transformer ,
Electric motors,and some home appliance such as microwave oven.

The units of measure is Tesla -µT : Nikola Tesla (10-Jul-1856 - 07-Jan-1943)
inventor of the Tesla coil and developer of inductor motor working by alternate current.
The normal earth emissions is around 20-40 µT.

High magnetic field can reach 200 µT (e.g. near to speakers).
In very high magnetic field (e.g. near electric motors ) it can be over 300 µT
such high magnetic field ,can easy damage credit ,mechanical watch .

If the phone has been exposed to e high magnetic field , the sensor need to be recalibrate by just shake the phone until the data reader become normal range.

A alarm can be set by the slider, over that value the value become red and the phone will vibrate.

So: stay away from strong magnetic field : find it and avoid it.