Assis A. The Experimental and Historical Foundations of Electricity Vol 2. 2018

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The simplest and oldest experiment of electricity, which gave rise to this field of research, is called the amber effect. It was originally performed with amber (electron in Greek), which is a hard and fossil resin. It will be reproduced here with a plastic straw or acrylic ruler. This behavior is also called the triboelectric effect or triboelectricity. The prefix “tribo” has also a Greek origin, meaning friction or rub. This effect is related to the electrification of bodies obtained through friction