Autor: Andrea Field

While it cannot be seen, energy is all around us. Defined as the capacity to do work, energy can be transferred from one entity to another, and exists in many different forms. This detailed volume …

As the foundation for other natural sciences, physics helps us interpret both our most basic and complex observations of the natural world. Physics encompasses such topics as mechanics, relativity, …

The diversity of the various states of matter-solids, liquids, and gases-belies their essential similarities. All matter is composed of atoms that combine in different ways, giving us the multitude …

Our body’s interpretation of hot and cold instinctively alerts us to the existence of temperature differences and gives us some sense of the concept of heat. Heat-the energy that is transferred from …