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CAN WE NOT TRUST THE SUN? Sometimes, work is not done properly. The entity in charge of correctness and behavior has to check on things to make sure everything is well done. I once made a card that said, "When we planted corn, we expected corn to grow; not cabbage. We do not have to keep digging it up to make sure it is still corn." The brilliant scientist wants us to keep taking the temperature of things, apparently to see if the sun is doing its' work. Or maybe for some other reason. Fill a plastic bag with soil, and place a small thermometer on top of the soil. Tie the bag securely. Place another thermometer on an open container of identical soil outside the bag. Leave both the bag and the container in bright sunlight, and record the temperature readings every ten minutes for an hour. Compare the readings from the two thermometers. The data can be graphed. Oh, good. Now we'll have hundreds of graphs to prove to us that the sun is doing what it is supposed to do. Do you think that when people lie in the sun all day long, they are just keeping tabs on the workings of the sun? That wrinkled, pre-cancerous skin with blisters on it is certainly evidence of the sun's function. Why is one set of readings higher than the other? Although both samples of soil received the same amount of solar energy, the energy absorbed by the soil in the bag heated the air confined in the bag. The trapped air, in turn, kept the soil warm. Fill two identical pans with equal quantities of soil or sand and set them in a warm place for several hours. Insert a thermometer in each pan 1/2 inch beneath the surface of the soil or sand. On a sunless, windless day, put both pans outdoors and away from any buildings. Place a cloth or canvas covering a few inches above one of the pans. For an hour, take temperature readings of the soil every ten minutes. The data may be graphed. Another great graph. You should see that the uncovered pan cools more rapidly, while heat energy strikes the canvas above the covered pan. Some of the heat energy striking the canvas is reflected back, some is retained, and some is transmitted to the soil in the pan beneath. How can there be a sunless day? If there were no sun that day, it would be dark as the inside of a goat, and it would not be called "day." There is probably no such thing as a "sunless" day. It probably refers to a day when there are many clouds between earth and sun, and the sun doesn't shine.  Any problems with this page? Send URL to
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