On the various forces of nature and their relations to each other

A series of accessible, demonstration-rich lectures for young audiences surveys fundamental physical forces and their interrelations, beginning with gravitation and cohesion, moving through chemical affinity and heat, and treating magnetism and electricity, before discussing the correlation of forces and practical applications such as lighthouse illumination and the electric light. Emphasis is placed on experimental illustration, intuitive explanations of how one form of force can give rise to others, and clarifying scientific ideas without heavy technicality.