Author Archives: gasperi
I wrote a very simple App to use my GSR sensor and published it on Google Play. Here is the link to it. More about GSR and the hardware you will need to use it can be found on the … Continue reading
Find out much more about Rochelle Salt on my page dedicated to it by clicking the link in the bar above. Here is a typical drugstore label for Rochelle Salt. This was used as a laxative.
The best book on the subject is The Voice of the Crystal . My plans for building a slide rule crystal radio.
Here are the plans for the Three-Cent Slide Rule from Science Experimenter 1966 page 157. Three Cent Slide Rule Plans And here are my plans for a simple paper slide rule you can cutout and use. Simple Paper Slide Rule … Continue reading
The original calculator. The Abacus: The World’s First Computing System
A simple way to make light and heat. Exploring Candle Magick (Candles, Spells, Charms, Rituals and Devinations)