Convert mach (20 Celcius dry air) to furlong/fortnight
Selected category: speed.
Definition and details for mach (20 Celcius dry air):
Mach (M or Ma) is a relative speed unit, used to compare an aircraft's speed with the speed of the sound in the atmosphere. It was named "Mach" to honor the Austrian physicist Ernst Mach (1838-1916). But because sound speed value depends on the density and temperature of the air, sometimes mach is calculated at 20 ºC in dry air. Conversion center, here uses these initial conditions.
Definition and details for furlong/fortnight:
Furlong per fortnight is a unit of velocity used to measure speed at sea. Furlong is equal to 201.168 meters and a fortnight is a traditional unit of time equal to 2 weeks. So one furlong per fortnight is 201.168 meters per 2 weeks or about 1.6631x10-4 m/sec.