Energy needed to raise 1 kg of water 1 °C is 4,186 joules, so energy needed to raise m kg of water
[where m is the mass of water you got above] ∆T °C is m times ∆T times 4,186 joules.)
The energy your detector absorbed is 4,186 times
the mass, m, of your water sample times ∆T, which is: joules.
Now your detector received this amount of energy in, say, 20 minutes (1200 seconds), and the
area of the water receiving the energy was 7.2 x 10-3 m2
.
Average amount of energy absorbed per second: (J s-1)
Average amount of energy absorbed per second per square meter: (J m-2 s-1).
This value is your measurement of the “ground level,” uncorrected solar constant. As discussed
above, if you now multiply this value by 2 and then 1.82, you should get a “corrected value” for