Böcker av Robert E. Krebs

This reference work describes the trial-and-error experiments, discoveries, and inventions of early humans who lived from before recorded history to the Middle Ages. Krebs travels through the ancient periods of Egypt, China, and Mesoamerica, to the classical Greek and Roman periods, and finally to the Christian era, providing students with the link between science and history, while revealing information about many cultures around the world. Each entry provides the who, when, and where of each discovery, invention, or experiment. Entries include calendars, gunpowder, anesthesia, contraception, spontaneous generation, the Arctic Circle, language, and tides.Part of the Groundbreaking Experiments, Inventions, and Discoveries through the Ages series, this book provides readers with a detailed look early humans' relation to world around them and the scientific advancements they made. It will be useful to high school and college students, teachers, and the general public interested in the history and science behind ancient civilizations.

People have always sought ways to explain the world around them and have often come up with incorrect answers. Science has grown through the correction of these mistakes. This reference examines the process of scientific experimentation and looks at those mistakes and misunderstandings.

This reference work describes more than 75 experiments, inventions, and discoveries of the period, as well as the scientists,

Provides an introduction, with examples on the use of the chemical elements. This book examines the elements within their groups, enabling students to make connections between elements of similar structure. It includes introductory material on the basics of chemistry and the Periodic Table; and more.