In this lab we are going to investigate the properties of an incandescent solid. We will be using a variety of specific heat specimens at room temperature as our incandescent solids. They will radiate in the IR part of the spectrum. Each group will be given a metal cylinder composed of either lead, copper, aluminum, or zinc. Each metal has its own unique emissivity constant listed in the table below. These values are based on the conditions of our specimens and are not standard for every sample of that metal.
metal

emissivity

aluminum

0.4

lead

0.6

copper

0.8

zinc

0.3

In our analysis we will be using the following relationships for incandescent solids:
Wien's Law
StefanBoltzmann Law
e
is the emissivity of the metal (0 <= e <= 1)
s
is Stefan's constant which equals 5.67 ×10^{−8} W/(m^{2} K^{4})
We will also be using the relationships:
wave speed photon energy E = hf
where h is Planck's constant and equals 6.63 x 10^{34} Jsec
Since we are working with metal cylinders, you will also need to know how to calculate the surface area and volume of a cylinder
SA = 2prL + 2pr^{2}
V = (pr^{2})L^{ }
The volume of a sphere is V = 4/3(pr^{3})
You will also need to remember how to calculate the mass density of a sample, r = M/V
