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Winter Spirits: Song around sound with chords and lesson ideas
Winter Spirits is about the terrifying sounds you sometimes hear in the dark.
It is ideal for lessons on sound. In the appendix you will find the text with chords as well as a number of lesson ideas.
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Self-adjusting clutch: Montagetechniek
In this video clip a roadmap for mounting a self-adjusting clutch.
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The Joule-effect: Experiment
In this video, on the basis of an experiment, the Joule effect demonstrated. Here you can determine that a cable subjected to electric current can cause a fire hazard.
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Replica cover: Making a molding from polyester
Making a mold in glass fiber reinforced polyester, from which a polyester cover is then made.
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Drilling with the JBVOD method
For example, should you drill a hole of Ø 20 mm, then you first need to drill.
Proceed as follows:
- drilling Ø 6
- take a piece of cotton soaked rag in oil or coolant and place it in the pre-drilled hole = the JBVOD method
- Then drill Ø 20. The …
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