There I was, playing with the water cooler bottle (I love making the water gloomph, Mrs Furtheringstoke not so much) when it suddenly occurred to me – what makes a water fall a waterfall? Is it a height, volume, water per second thing or what? Inspired, I made the water gloomph one more time before racing back to my station and hopping on web. The nitty gritty: Height The primary qualifier is...

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