Mach waves, also known as shock waves, are created by faster-than-sound objects such as aircrafts. These waves are characterized by a sudden and intense increase in pressure and temperature. They can also cause a loud noise, commonly called a sonic boom. Synonyms for mach waves include sonic boom, blast wave, shock front, pressure wave, and sound barrier. The term sound barrier is often used to describe the phenomenon of an object breaking the sound barrier and creating mach waves. Understanding the properties and effects of these waves is important in aviation and aerospace engineering, as well as for creating quieter and more efficient aircraft designs.