Model No. PS-2148
Suggested Activities
7
®
Suggested Activities
Solar Radiation
Measure the radiation intensity from the sun. Compare it to the
intensity from a different part of the sky. (When measuring the
temperature of the sky, make sure that the sun and other objects such as
trees and buildings are not in the field of view.)
How does the presence of clouds, or the angle of the sun in the sky
affect solar radiation intensity?
According to your measurement of intensity, what is the total power
radiated by the sun? What is its surface temperature?
Intensity vs. Distance
Graph intensity as a function of distance. How does a point source such
as the filament of a small light bulb, compare to a larger source such as
a hotplate?
Intensity vs. Temperature
How is the temperature of an object (or the temperature difference
between the object and the sensor) related to the net intensity?
Cooling
Measure the temperature of a hot object as it cools, and measure the
radiation intensity emitted by it. How does the rate of temperature
change compare to the total radiated power? How does the total
temperature change compare to the total radiated energy? Besides
radiation, what are the other mechanisms of heat loss?
(T
s
4
– T
d
4
) versus voltage
Summary of Contents for PASPORT PS-2148
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