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QElectroTech: Drawing electrical diagrams
QElectroTech is open source software to draw electrical diagrams free of charge. In addition to the software, you will also find a manual, videos and sample diagrams on this website.
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Stiftung Kinder Forschen: Experiments for children
This website offers a range of experiments, each visualized with photos and explained with a pedagogical-didactic explanation.
The experiments are organized by theme:
- astronomy;
- building and constructions;
- communication;
- sound;
- health;
- carbon …
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