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Posted 6 years ago by PeterDkl in category: interesting   Comments (3)


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The last 10 seconds shows the backdraft. A backdraft is a dramatic event caused through rapid re-introduction of oxygen to combustion into an oxygen-depleted environment in a fire; for example, the breaking of a window or opening of a door to an enclosed space. Backdrafts present a serious threat to firefighters.
Posted 5 years ago by Snappo in category: interesting   Comments (3)


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Facts about the auto tune phenomenon
Posted 14 years ago by woodhead in category: interesting   Comments (1)



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Posted 12 years ago by boyt in category: interesting   Comments (1)


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Posted 11 years ago by boyt in category: interesting   Comments (0)