11. Complete schlieren optical systems can be built from components, or bought as commercially available instruments. 12. There are 6262 households in Schlieren . 13. There were 5481 Protestants in Schlieren . 14. The design is also called the Schlieren design based on the location of the Swiss company. 15. Its head office was in Bern, and it had an eastern Switzerland office in Schlieren . 16. Schlieren physics developed out of the need to produce high-quality lenses devoid of these inhomogeneities.17. The method excels in spatial and temporal resolution comparably with a similar approach of laser schlieren deflectometry. 18. He became the first person to observe a shock wave propagating over an airfoil using Schlieren photography. 19. The 20 km journey took 45 minutes with the trains stopping at Altstetten, Schlieren and Dietikon. 20. One station was equipped for Schlieren spark photography to record the shock waves and wake around the projectile.
