| We then look at the case of a toroid compressed in the plane of the toroid. |
| The geometry of the house is based on that of an elliptical toroid. |
| Here we examine this in detail, first looking at the case of a circular toroid deformed into an ellipse. |
| The toroid adds additional optical power in the vertical direction to bring the two focal planes together. |
| By contrast, the central region of Macrobdella Hb contains a hexagonal toroid at a resolution of 4 nm. |
| The roof shapes are engaging, seemingly free-form, but are actually segments of a toroid. |
