Friday, 7 December 2007 - 6:52 AM EST

For our lab, the brass expanded one 1 tick (.2mm), the lead expanded 1 tick (.2mm) and the aluminum expanded 2.5 ticks (.5mm).  Aluminum expanded the most and lead and brass were about equal.  It seems that aluminum would be a good metal to have on a bimetallic strip because it expanded so much more that the other metals.  This could be because aluminum was the least dense metal, so the heat affected it more dramatically.

Friday, 7 December 2007 - 12:29 PM EST

In our lab, the brass rod expanded 1.5 units, or .3 mm.  The lead rod expanded .25 units, which was .05 mm. And the aluminum rod expanded a total of 3 units, which is .6 mm

Wednesday, 12 December 2007 - 11:12 AM EST

for the brass, the scale moved 1.5 ticks,  For lead it moved 2 ticks, and for aluminum, it moved 4 ticks.  Meaning the brass expanded least, aluminum the most, and lead was in the middle.  Though, because of the time constraint, this only illustrates how quickly each substance heated up, not its ability to expand. 

Wednesday, 12 December 2007 - 6:35 PM EST

I calculated the specific heat of our first block, which I believe was aluminum, to be 910 J/kgC.  The second, which I believe was brass, came out to be 390 J/kgC.