By combining ultrasound with a concept called nonlinear acoustics, you can create sound that stays silent until it reaches a ...

trumpet the sound from the trumpet comes from a vibrating column of air created by buzzing lips of the trumpeter A sound wave is a longitudinal wave. When an object vibrates it produces a ...

Using an air vortex cannon to focus the sound waves from the bass reflex port, it ‘wiggles’ the flame out in a matter of seconds, as illustrated with a thermal camera. Compared to the much ...

Ocean waves have long been seen as having huge potential as a source of renewable energy. Waves produce an estimated 50 ...

Sound is a vibration that travels through air as a wave. These waves are created when an object moves back and forth, compressing and decompressing air molecules. The frequency of these vibrations ...

As an airplane flies faster than the speed of sound, it "pushes" on the sound waves in front of it. But sound waves obey the speed limit—they can't travel faster than the speed of sound.

A group of international researchers have developed a way to use sound to generate different types of wave patterns on the ...

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. Researchers have now created a new type of glass using nothing but sound waves and salt.