| The structural role of the toroid was assumed to be a pier to which two bracelets are fixed by 12 connections. |
| By contrast, the central region of Macrobdella Hb contains a hexagonal toroid at a resolution of 4 nm. |
| When stretched at fixed displacement, the toroid undergoes a transition from an ellipse to a tadpole regime. |
| The toroid adds additional optical power in the vertical direction to bring the two focal planes together. |
| The roof shapes are engaging, seemingly free-form, but are actually segments of a toroid. |
| Here we examine this in detail, first looking at the case of a circular toroid deformed into an ellipse. |
