Nearly every system built by Flow Systems uses sonic nozzles for flow measurement and control. 1  Sonic Nozzle design options. 2  Sonic Nozzle arrays. 3  Sonic Nozzle schematics and performance charts. 4  Sonic Nozzle flow calculation software. 5  Uncertainty analysis reports on Flow Systems test stands built with sonic nozzles.
The Amish, called The Plain People or Old Order Amish, originated in Switzerland about l525.They came from a division of the Mennonites or Anabaptists (Re-baptizers). They opposed the union of church and state and infant baptism. They baptized people only as adults at about age l8.rigins of the Old Order Amish. The Amish, called The Plain People or Old Order Amish, originated in Switzerland about l525. They came from a division of the Mennonites or Anabaptists (Re-baptizers).
Members of this conservative Christian faith came to Pennsylvania in the early 18th century to escape persecution in Europe for their Anabaptist beliefs. The Pennsylvania Amish community in Lancaster County is the oldest and largest Amish community in the United States, numbering about 30,000. The population has more than doubled in size in the past 20 years. The Amish have their roots in the Mennonite community.