The vortex cores are often referred to as "wingtip vortices," though this is a bit of a misnomer. While it is true that the cores line up fairly closely behind the wingtips, the term “wingtip vortices” implies that the wingtips are the sole sources of the vortices. Actually, as we saw in Figure 3.2, the vorticity that feeds into the cores generally comes from the entire span of the trailing edge, not just from the wingtips. ↑ McLean, Doug (2012).