Routes of science

Describes discoveries about the properties of light throughout history, from Euclid's studies of reflection and refraction in ancient Greece to the invention of lasers by American physicist Charles Hard Townes in the 1960s.

Describes the study of gravity throughout history, from the ponderings of the ancient Indians, Chinese, Babylonians, and Greeks to twentieth-century physicist Stephen Hawking's theories on black holes, and includes a glossary and further reading list.

Traces the process of scientific discovery in the field of geology from ancient times into the twenty-first century, introducing some of the people who have contributed to the field, and including maps, charts, and illustrations.

Introduces young readers to the basics of electricity, discussing how it was discovered, what it is used for, and how it works.