| He passes through from east to west, the geological units Stad-slate, flysch and melange of Wildflysch and Schlieren Sandstone. |
| These same schlieren can be observed when hot air rises off the tarmac at airports or desert roads and is the cause of mirages. |
| A final method not currently within the standards is phase-shifting schlieren, using deflections from projected concentric rings to analyse power of lenses. |
| The oldest age pattern corresponds to schlieren and nebulitic migmatites and is obviously bimodal. |
| Schlieren exhibit layering similar to cross-bedding and preserve ripple marks along their base. |
| A Schlieren optical study of the human cough with and without wearing masks for aerosol infection control. |
