The vacuum flask keeps your food or drink hot or cold. It was designed in such a way to keep heat from escaping from the hot contents to its surroundings or to prevent heat transferring from the surroundings heating up the… Continue Reading →
A greenhouse is a small glass building that is used for growing plants to protect them from the cold. Understanding how it works to trap heat can help you to understand global warming because the principles are the same. Two key things to… Continue Reading →
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