The volume of a sound is how loud or quiet the sound is. Sounds are vibrations that travel through the air. A nail hit hard with a hammer will make a strong vibration, which means it will make a ...

"supersonic speed is the speed of an object that is faster than the speed of sound, measured at about 768 miles per hour at sea level." Aircraft speed is measured by a Mach number, which is ...

During the demonstration flight on January 28, 2025, the XB-1 broke the sound barrier three times, but not one of those ...

High above a barren California desert on Tuesday, a privately developed aircraft broke the sound barrier for the first time when Boom Supersonic's XB-1 demonstrator reached Mach 1.122.