Arnold Ringstad

From tiny solar cells in calculators to huge arrays of solar panels, solar energy technologies use the sun s heat or light as useful energy sources. The Science of Solar Energy examines the field of solar energy, including the underlying scientific concepts, its potential for replacing fossil fuels, examples of how it is used today, and prospective future developments.

Presents information about the physical characteristics, behavior, life cycle, and habitat of leopards. Also discusses their conservation status. Includes color photographs, a glossary, and further resources.

Retells the story of Orion and variations of the myth, discusses the astronomical features of the constellation Orion, and describes the history of the constellation and its myths in world culture.

Discusses the parts inside drones and how they work together.

This book is a collection of idioms, from "Behind the eight ball" to "At the drop of a hat," giving meaning, origin, and example.

Presents information about the physical characteristics, behavior, life cycle, and habitat of cheetahs. Also discusses their conservation status. Includes color photographs, a glossary, and further resources.

Presents a variety of unusual and noteworthy details about American weapons, generals and other personnel, military records, wars and other conflicts, and other information on military life.