- a number indicating the ratio of the speed of an object to the speed of sound in the medium through which the object is moving. Abbreviation: M
Origin of mach
- Ernst [ernst] /ɛrnst/, 1838–1916, Austrian physicist, psychologist, and philosopher.
Examples from the Web for mach
The jet is “redlined” at Mach 2, but structurally it can reach a maximum speed of Mach 2.25.Exclusive Pictures of Stealth Jet Raid on Syria
September 25, 2014
But during that time in hell in Mach his beard turned pure white.Freed Taliban Prisoners in Pakistan and Afghanistan Return to Jihad
Ron Moreau & Sami Yousafzai
December 6, 2013
Slowing down in preparation for parachute deploy at Mach 1.7.Curiosity’s Mars Landing Narrated Moment by Moment by Flight Director Keith Comeaux
August 7, 2012
This vexed her so mach that she wept day and night about it.The Memoirs of the Louis XIV. and The Regency, Complete
Elizabeth-Charlotte, Duchesse d'Orleans
Tenants then have as mach right as the landlord used to have.Roland Cashel
Charles James Lever
Mach says that disintegration takes place in times of peace.The Psychology of Nations
"A hand in the act of grasping," now spoken of in Maya as mach.The American Egypt
All the proofs of this translation have been read by Professor Mach himself.Popular scientific lectures
- short for Mach number
- Ernst (ɛrnst). 1838–1916, Austrian physicist and philosopher. He devised the system of speed measurement using the Mach number. He also founded logical positivism, asserting that the validity of a scientific law is proved only after empirical testing
Word Origin and History for mach
measure of speed relative to the speed of sound (technically Mach number), 1937, named in honor of Austrian physicist Ernst Mach (1838-1916).
- Austrian physicist and philosopher who experimented with supersonic projectiles and the flow of gases, obtaining early photographs of shock waves and gas jets. His work laid an important foundation for later developments in the science of projectiles and aeronautical design, and the Mach number and Mach bands were named for him.