Morning Overview on MSN
Why car side glass turns to pebbles but windshields crack differently
When a rock hits a side window, the glass often explodes into a shower of tiny cubes, yet the same impact on a windshield ...
Tempered glass is about four times stronger than "ordinary," or annealed, glass. And unlike annealed glass, which can shatter into jagged shards when broken, tempered glass fractures into small, ...
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