The air we breathe

Is there liquid air and why can it be used? How are the components of the air - nitrogen, oxygen - help in the production of metal, glass or food for food? What path did scientists have gone to determine these components? What is the benefit of a vacuum? Who and why opened the methods of sucking air from different containers? With the help of this book, your child will solve the main "riddles" of air that surrounds us everywhere. It simply and fascinatingly tells about the numerous functions of this amazing gas: about how it helps to save life, create objects that are useful for a person or make long trips possible. An equally important part of the book is the history of the study of air properties: from the teachings of the ancient Greek philosopher to the last achievements of modern science. This book will appeal to both children interested in science and their parents