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).
As of 2000, over 165,000 Old Order Amish live in the United States and about 1,500 live in Canada. A 2008 study suggested their numbers have increased to 227,000, and in 2010 a study suggested their population had grown by 10 percent in the past two years to 249,000, with increasing movement to the West.mish church groups seek to maintain a degree of separation from the non-Amish world, i.e. American and Canadian society. There is generally a heavy emphasis on church and family relationships. They typically operate their own one-room schools and discontinue formal education after grade eight, at age 13/14.