Name Change

I've changed the name that I use to refer to the phenomenon that deforms a vortex ring shortly before breaking down, and which also deforms other vortex types in a similar manner. Reason for this is that I was unaware that there already is a phenomenon called a crown formation, which is a particular way in which a liquid can splash upwards. So therefore it was better to change the name crown deformation into 'sinusoid deformation' and for that I've updated the page about the boundary dimensions.

Image by Omegatron, Wikimedia, under CC BY-SA 3.0 license		Image by CSE Lab, ETH, CSCS, and IBM

The deformation of a vortex ring into a sinusoid wave shaped ring is not something new, it is not a new discovery, it has been observed and studied for many years. But it is how this phenomenon links with other shape deformations, in other vortices of different type, whose similarity only now has been found and which was not known prior to this. For that reason I had to come up with a new name for it. As for now this name is a temporary name, which might be changed later when more people try to decide how this particular phenomenon should be named.