PASCO TD-8497 Solar Constant - Manual (Page 10)

Model No. TD-8497 Solar Constant
9 ®
Sample Data
This graph shows cooling rates for the three aluminum cylinders with different surfaces.
When the cylinders were moved inside to a cool room, the white cylinder emitted radiation
almost as good as the black cylinder. The white cylinder cooled faster than the silver; this
shows why white is the best overall color to keep cool!!!
The following graph shows a comparison of heating rates for the three black cylinders, each
of a different size and/or material. Note that the small cylinder heats up faster (because of a
bigger surface to volume ratio, as expected) than the other cylinders, but the big cylinder has
the highest final temperature. Why?
Cooling rates of Aluminum Cylinders
Moved Indoors to a Cool Room
Heating Rates of Black Cylinders
of Different Size and/or Material