Having previously made a variety of PPE devices on a 3D printer, I still hadn't found exactly what I was looking for. Using mostly cloth masks (yes, made by my mother) and more recently a black ...
Key learning points Properties of magnets What are magnetic fields? Magnetic fields lines are invisible but they fill the space around a magnet where the magnetic forces work on magnetic materials, ...
CAYANA: Aren't magnets great? They can move other magnetic objectswithout even touching them. Take one of these bar magnets, forexample, right. The red end is the north end. The blue end is thesouth ...
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