Vadose Zone J. 10:1116–653 (May 2011)
On page 645, a symbol in the following passage was presented incorrectly.
The contact angle ϑ in Eq.  is assumed to be a function of the capillary number Ca, ϑ = ϑ(Ca) where Ca = η¡/γ. Note that one could have also used the Darcy velocity q to define Ca. Microscopic observations, however, suggest that the contact angle depends on the velocity of the air–water interface, i, and not on q.
The i should be ¡. Hence:
The contact angle ϑ in Eq.  is assumed to be...