Urban art by children

 

This is an example of what can happen when you offer children a public space

 to express their creativity:

 

Bozen / Bolzano - Italy

Experiments with human auditory system and modulated high frequency

I've been doing some experiments lately with modulated electromagnetic energy.  

I observed the effects on my auditory system.

Geigerzähler / Dosimeter - Bausatz

I can recommend the kits and ready-made modules from the e-Bay dealer "IMPEXERIS" from Lithuania.

The module I ordered worked perfectly right away. I only added a housing to it.

 

 http://arduino-geiger-pcb.blogspot.com/