THIS little book is “intended to form a first course for boys who have already learnt the elements of mensuration, statics, dynamics, and heat”; the object being “to introduce the student to the ...

In this DIY tutorial, learn how to create your very own mini generator 220v at home using a basic DC motor. Perfect for ...

THIS is a very welcome addition to the growing number of books written in what we may venture to call the good modern style; that is, not just a descriptive catalogue of marvels, or a collection of ...