Educational aids
MACHINE TRANSLATION (not authorised yet)
Magnetism, which includes not only ordinary magnets, but also magnetic needles and compasses, which teach what exactly this phenomenon consists of and how to use it in practice.
MACHINE TRANSLATION (not authorised yet)
Magnetism, which includes not only ordinary magnets, but also magnetic needles and compasses, which teach what exactly this phenomenon consists of and how to use it in practice.