Raindrops keep falling...

.. on the stream. If I took enough shots I thought one might look sort of OK. Its the triumph of persistence over artistic ability. Anyway - I like that I caught a couple of drops hitting, and there are some nice circles.

Did you know, if you differentiate the area of a circle
A = pi*r^2
you get
dA/dr = 2*pi*r
which is the circumference.
I didn't realise this until recently, despite having use both formula for years.
(I think this puts me in the geek category)