Item no.: F16
Heat is a transient process of energy transferred or induced from temperature difference or phase change. As the heat is input into and assorted by metal material, the rising temperature of substance will depend on the heat amount, material mass and heat capacity.
- Specific heat of metal
- Electrical equivalent of heat
- Thermal expansion of metal
The specific heat of material is defined as the heat Q required to change a unit temperature of per unit mass. Here the relative formula might be developed as.
Experiment—Coefficient of linear expansion
Proportionality constant (coefficient of linear expansion) , a given material under normal working temperature, is defined a the difference rate of length for per increment of temperature and which is given below. ΔL=αL(T1 – T0)
Experiment—Electrical equivalent of heat
In this experiment, equivalent heat Q converted from the mechanic work electric energy IVt, will be used to induce the temperature-variation of system. Here relevant formula will be given below.