mach

• Имя собственное, относящееся к конкретному человеку, обычно фамилия известной личности.

A proper noun referring to a specific person, typically a surname of a notable individual.

неисчисляемое · имя собственное

1. Austrian physicist and philosopherB2formal

   Ernst Mach (1838–1916), a physicist and philosopher known for his work in shock waves and the philosophy of science, and for founding logical positivism.

   Австрийский физик и философ

   • Mach's work on supersonic flow revolutionized aerodynamics.
   • The term 'Mach number' is named after Ernst Mach.
   • Mach's principle influenced Einstein's theory of relativity.

2. Unit of speedB1formalscientific

   A dimensionless unit representing the ratio of an object's speed to the speed of sound in the surrounding medium.

   Единица скорости

   • The fighter jet flew at Mach 2, twice the speed of sound.
   • The aircraft broke the sound barrier at Mach 1.
   • The rocket achieved Mach 5 during re-entry.

   Синонимыmach number