Amazon is experimenting with a different Echo name, and it's one that's so perfect I wish they'd just do it today.

The film explores the nature of sound waves, demonstrating how sound travels as a wave through air, which acts as a medium. It illustrates sound generation using a loudspeaker, examines oscillation, ...

This vibrates the cone which creates the sound waves. Sound waves can reflect off surfaces. We hear reflected sound as an echo. Hard, smooth surfaces are particularly good at reflecting sound.

A team of researchers have developed "audible enclave" technology that creates pockets of sound that can be heard at a ...

Heart conditions can be difficult to diagnose, often requiring specialised tools to provide a clear picture of a patient’s heart health. Among the most effective methods is the echo test for heart, ...

Scientists have been unable to confirm the existence of time reflection due to the amount of energy required to create a temporal interface. Using an engineered metamaterial scientists in New York ...

Narrator: Because the rattle is hollow inside, sound waves can bounce off the walls and echo — the same way shouting in a cave amplifies the sound. And the bigger the "cave," or hollow rings in ...

And the results are over 95% accurate." An echo test involves ultrasound-- high-frequency sound waves -- to evaluate the function of heart muscle and valves, the same technology used to ensure a ...

Alexander Behm sails the North Sea and bounces sound waves off its bottom, advancing a new method of depth measurement known as echo sounding. William Beebe and Otis Barton descend in a tethered ...