mach

¹

Or Mach

[mahk]

noun

1. mach number.

Mach

²

[mahk, mahkh]

noun

1. Ernst 1838–1916, Austrian physicist, psychologist, and philosopher.

mach.

³

abbreviation

1. machine.

2. machinery.

3. machinist.

Mach

¹

/ mæk /

noun

1. short for Mach number

Mach

²

/ max /

noun

1. 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

Mach

1. 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.

Word History and Origins

Origin of Mach¹

After Ernst Mach

Example Sentences

Hypersonic means something that travels at speeds of Mach 5 or faster.

From BBC

President Vladimir Putin said that the weapon travelled at a speed of Mach 10.

From BBC

Mach’s Shakespeare has the cocky strut of a rapper-producer with a long list of colossal hits.

From Los Angeles Times

"The passing of Proposition 139 speaks to the broad support — across the entire state, across all political parties, and across voters of all different backgrounds — for reproductive freedom," Erika Mach, Planned Parenthood Arizona's chief external affairs officer, told Salon.

From Salon

"People want the freedom to make medical decisions with their doctor and family, without government involvement," Planned Parenthood Arizona's Erika Mach told Salon.

From Salon

When To Use

How fast is Mach 1?

A Mach number is the ratio of an object's speed in a given medium to the speed of sound in that medium.Mach 1, then, is the speed of sound, around 761 mph at sea level on a standard day. The term is also used as a metaphor for high speeds more generally.How to pronounce Mach 1[ mahk wuhn ]