G eneral Science" by Bertha May Clark is a scientific publication written in the early 20th century. The book aims to educate readers on the principles of science and its applications in everyday life, particularly emphasizing the importance of understanding scientific concepts to address common issues and improve efficiency in various tasks, from household chores to industrial operations. The opening of the book begins with a preface outlining the author's intent to prepare readers for real-world problem-solving rather than standardized examinations. Clark discusses the importance of conserving human energy and resources, drawing parallels between scientific principles and practical applications. She emphasizes the need for an understanding of machines and labor-saving devices, while also addressing topics like musical instruments and electrical principles. This practical foundation sets the stage for a deeper exploration of scientific concepts in subsequent chapters, starting with an examination of heat, its effects, and its significance in everyday life. Temperature not a Measure of the Amount of Heat Present. If two similar basins containing unequal quantities of water are placed in the sunshine on a summer day, the smaller quantity of water will become quite warm in a short period of time, while the larger quantity will become only lukewarm. Both vessels receive the same amount of heat from the sun, but in one case the heat is utilized in heating to a high temperature a small quantity of water, while in the second case the heat is utilized in warming to a lower degree a larger quantity of water. Equal amounts of heat do not necessarily produce equivalent temperatures, and equal temperatures do not necessarily indicate equal amounts of heat. It takes more heat to raise a gallon of water to the boiling point than it does to raise a pint of water to the boiling point, but a thermometer would register the same temperature in the two cases. The temperature of boiling water is 100 deg. C. whether there is a pint of it or a gallon. Temperature is independent of the quantity of matter present; but the amount of heat contained in a substance at any temperature is not independent of quantity, being greater in the larger quantity.
