Mechanical ohm

The mechanical ohm ( symbol : mech. Ω ) is an outdated unit of mechanical impedance . The Ω (large Greek omega) without the addition of mech. stands for ohm , the SI unit of electrical resistance and impedance of electromagnetic waves.

${\displaystyle 1\;\mathrm {mech.\Omega } =1\;\mathrm {\frac {dyn}{cm\cdot s}} =0{,}001\;\mathrm {\frac {kg}{s}} =1\;\mathrm {\frac {g}{s}} }$

The mechanical impedance is the quotient of the driving force and the speed of sound, and describes the resistance that a material opposes to a mechanical vibration. Force and speed are described as complex quantities that depend on the phase angle of the oscillation. The impedance is therefore generally a complex quantity.

source

• Peter Kurzweil: The Vieweg unit lexicon. Vieweg, Braunschweig / Wiesbaden 2000, ISBN 978-3-528-06987-2

Individual evidence

1. ↑ Peter Kurzweil: The Vieweg unit lexicon: terms, formulas and constants from natural sciences, technology and medicine . Springer-Verlag, 2013, ISBN 978-3-322-83211-5 , pp. 300 ( limited preview in Google Book Search [accessed June 14, 2016]).