PHYS 1511 Chapter Notes -Thermal Expansion, Thermal Conductivity, Kelvin
Document Summary
Chapter 18 of cutnell and johnson"s physics textbook, "temperature, heat, and the first. Law of thermodynamics," explores the fundamental concepts of temperature, heat, and thermal energy. The chapter begins by de ning temperature as the measure of the average kinetic energy of particles in a substance. The celsius and fahrenheit temperature scales are discussed, along with the absolute temperature scale, known as the kelvin scale. The relationship between temperature and thermal expansion is also explained. Next, the chapter discusses heat as the transfer of thermal energy between objects due to a temperature difference. The two types of heat transfer, conduction and convection, are introduced, along with the third type, radiation. The rate of heat transfer is described by the thermal conductivity, and the concept of thermal resistance is also introduced. The chapter then goes on to explore the rst law of thermodynamics, which states that energy cannot be created or destroyed, only transferred or converted from one form to another.
