Odd Notches, Often Below Veil-Like Crests

Photo date: December 21, 2020. Photographer: Mark Mahin.   

I took the photos below while photographing only ordinary drops of pure, clean water falling in front of a black featureless background.  We orbs with an indentation at their top centers, and such indentations often appear under the crests of veil-like shapes. It's an effect similar to the effect shown in this post and  this post.