Baher, materials and materials

A brilliant intelligent child, his mind is full of bright ideas that preceded his era (the Stone Age), and he has been working on translating these ideas in the form of a group of useful inventions. Indeed, these inventions will change the way people live and work over the following hundreds of years. In this book, we learn together the materials extracted from the rocks and minerals of the earth, which can be used to make paint dyes, explosive materials, building materials, and even light -sensitive surfaces that were used in old cameras, and are still used to make glass to this day. The book also looks at the method of extracting rubber to make beneficial things such as tires and rubber bands. The book also looks at the contributions of radioactive radium, Mary Curie