From The Source [the Essay]


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Stand knee-deep in a river and consider the energy flow. Water presses against you, light reflects upon the surface. What else can you feel? Helen Czerski of University College London views the Thames with the eyes of a physicist. At low tide she takes Eleanor Rosamund Barraclough for a wade through the surprisingly clean waters separating Brentford from Kew Gardens.

How would the river look if embankments were removed and channels breached? Why do islands form and persist? Where does each drop of Thames water come from? Why do artists like Monet and Turner observe and interpret the river in different ways?

You may never view the Thames in quite the same way again.

Producer: Alasdair Cross

Helen Czerski shares a physicist's view of the River Thames.

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