This afternoon we were watching a "How It's Made" episode on Discovery Channel about fluorescent tube lights. When the narrator described how the glass tubes were emptied of air and filled with gas, my son asked almost incredulously, "They fill it with gas?!"
He paused and then asked, "People gas?" (I can only imagine what kind of image that conjured up in his mind!) Then he went on to explain to me that there are two types of gas: car gas and people gas.
There's your science lesson. Got it?
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