The Science Behind Microwave Sparks: Why Metal Reacts and How to Prevent Accidents

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Microwave Sparks: The Science Behind Metal & Sharp Edges Explained

प्रतिकात्मक फोटो

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News18•23-02-2026, 18:36

Microwave Sparks: The Science Behind Metal & Sharp Edges Explained

•Microwaves use a magnetron to generate electromagnetic waves that vibrate water molecules in food, creating heat.
•Metal objects, being excellent conductors with free electrons, react differently to these waves than glass or plastic.
•When microwave waves hit metal, electrons move rapidly; sharp edges cause a high accumulation of these electrons.
•Excessive electron buildup on sharp edges ionizes air molecules, leading to an electric current jump (arcing) or 'sparking'.
•Sparks can cause fires, damage the magnetron, or crack dishes with metallic designs; always use microwave-safe dishes.

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