
About
This utility app uses your phone's internal compass to detect magnetic fields from various sources like electronics and power lines. It helps you identify and avoid areas with strong magnetic emissions that could potentially damage credit cards or mechanical watches.
What's New in eTesla
1.0
November 21, 2014
This app has been updated by Apple to display the Apple Watch app icon.
User reviews
FAQ
What can eTesla detect?
eTesla can measure magnetic fields generated by metals, high electromagnetic emissions from high voltage lines, transformers, electric motors, and some home appliances like microwave ovens. It uses your phone's internal compass for these measurements.
What units does eTesla use?
eTesla measures magnetic fields in Tesla-µT (microteslas). This unit is named after Nikola Tesla, the inventor of the Tesla coil and developer of the induction motor.
How strong are normal magnetic fields compared to those detected by eTesla?
Normal Earth emissions are around 20-40 µT. eTesla can detect high magnetic fields reaching up to 200 µT near speakers, and over 300 µT near electric motors.
Can eTesla help protect my devices?
Yes, eTesla can help you identify areas with high magnetic fields, which can potentially damage credit cards and mechanical watches. By finding and avoiding these strong fields, you can protect your belongings.
How do I recalibrate eTesla's sensor?
If your phone has been exposed to a high magnetic field, the sensor may need recalibration. Simply shake your phone until the data reader returns to a normal range.
Does eTesla have an alarm feature?
Yes, eTesla features an alarm that can be set using a slider. When the measured magnetic field exceeds the set value, the reading turns red and your phone will vibrate.
Is eTesla available on Android devices?
Based on the provided data, eTesla is currently supported on iPhone and iPod devices. Information regarding Android compatibility is not available.
How often is eTesla updated?
eTesla was last updated on November 21, 2014, with version 1.0. The app has not received updates since its initial release date.
