Support for Java Applets, including Physlets, has been discontinued by browsers and Oracle. Thus, traditional Java-based Physlets are no longer supported on this website. Please note Open Source Physics (OSP) Java programs continue to run on computers with Java if users download the jar file.

The OSP team is busy updating and developing simulations using HTML5 + JavaScript.
These simulations run on almost all platforms including tablets and cellphones. Explore the Third Edition of Physlets Physics or search OSP for JavaScript to find these simulations.

Chapter 19: Heat and Temperature

The study of the relationship between heat, work and internal energy, described macroscopically by temperature, is the focus of thermodynamics. Heat is the energy transferred due to the temperature difference between objects and/or the energy transferred when work is done to change the internal energy of an object. The 2nd law of thermodynamics declares that heat flows naturally from objects of higher temperature to objects at lower temperature. We categorize the mechanism of heat transfer in terms of conduction, convection and radiation. As we study what happens when heat is added to materials, we explore state changes (melting-freezing, vaporizing-condensing) and temperature increases in solids and liquids. As the temperature increases, we also quantitatively describe the expansion of materials.

Table of Contents

Illustrations

Explorations

Problems

Thermodynamics TOC

Overview TOC

The OSP Network:
Open Source Physics - Tracker - EJS Modeling
Physlet Physics
Physlet Quantum Physics