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Demonstrating that glass in a microwave oven doesn't normally get hot. This is explained by a brief description of how microwave ovens work by making molecules 'wiggle' and therefore heat up. This is followed by a demonstration of how a microwave can be used to melt a glass bottle. A small piece of glass is heated to red hot, allowing the molecules to 'wiggle'. This is then placed on top of a glass bottle and the bottle placed in the microwave and the bottle melts.
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