Musing on the nature of flow

Water weighs one gramme per millilitre–a cubic centimetre*.

That’s one kilogramme per litre. Or 1000 kilogrammes per cubic metre–a metric tonne.

Yet we don’t think of water as being heavy until we experience it moving in volume and at pace. And then we hear its roar.

Musing on the nature of flow, because it’s not always what we expect.  

*precisely: when at 4 degrees centigrade and at sea level.