Science Source General Science
EN_90286236_0005
![Science Source General Science](img/medium/arch1/dvd0114/35/EN_90286236_0005.jpg)
An experiment on focusing water waves. To focus water waves as a lens focuses light, a convex piece of glass is used in a riple tank. Straight waves from the bottom of the photograph converge after they have passed over the "lens."
2010-02-13
EAST NEWS
Science Source
Berenice Abbott
8i8889
1,09MB
25cm x 29cm by 300dpi
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