THE careful instructions for the eighty-five experiments contained in this little book, together with the useful hints for the construction of apparatus, should serve very well to introduce young ...

"Originally published in ... Popular mechanics ... For the average boy, with few tools, and a desire to learn the principles underlying the construction of the more common electrical ...

Discover the fascinating world of static electricity through simple balloon experiments. You'll learn how static charges build up through friction, how they attract or repel objects, and see everyday ...

On a physical level, a transistor’s internal functioning is very complex, but, in practice, using it in some simple experiments is quite easy and affordable for everyone. A transistor allows to create ...

Bits of material levitating against gravity, a stream of water deflected by invisible means, sparks of light appearing out of thin air; with observations like those, it’s a wonder that the early ...