thermodynamics.gif (19136 bytes)

CONDUCTION DEPENDENCE ON TYPES OF METAL








EQUIPMENT
    redball.gif (326 bytes) 7 Finger Rods (Al, Brass, CU, Fe (Thick), Fe (Thin), NiAg, Ni)
    redball.gif (326 bytes) 7 Small Ball Bearings
    redball.gif (326 bytes) 7 Small Bits of Tackiwax
    redball.gif (326 bytes) Propane Torch
    redball.gif (326 bytes) Catching Pan
  

NARRATIVE
            Seven different (diameter and composition) rods are connected to a common junction. Heat will conduct through these at different rates.

            Press a small ball of tackiwax to the end of each of the rods and then stick a small ball bearing to it. Apply heat from a propane torch to the junction. The wax will soften as the heat is conducted, and the ball bearing will drop on to the metal pan.