2011年3月30日 星期三

Explaining a Process-2

You can do a easy solar energy experiment to show that black is a better collector of solar energy than white. What you need is 2 tin cans, black and white paint, and room thermometer. First, paint the cans-one black, one white. Next, fill the cans with water. Then, put the cans in direct sunlight for three hours. Finally, check the temperature of the water in the cans and compare. It will prove that the temperature of the water in the black can is higher. And you can use this conclusion in your daily life.

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