Besides an ideal source of lift for your balloons, helium is also ideal for making your voice high and squeaky, but how does ...

Mag., 4, 417; September 1927) certain physical and biological effects observed with high frequency sound waves of great intensity. To obtain this great intensity, high potentials (of the order of ...

A testicular ultrasound uses high-frequency sound waves to produce images of your testicles and the tissue around them. It can take detailed pictures of your scrotum, testicles, and their blood ...

New technique uses sound waves to separate precious fuel cell material for recycling and keep harmful ‘forever chemicals’ out ...

They tested three sounds on muscle cells taken from mice: white noise, a 440 Hz tone (the “A” note on a piano) and a high ... on the frequency, intensity and pattern of the sound wave.

This extra mass slows down the vibrations, creating lower-frequency sound waves that we hear as a lower pitch ... it pushes and pulls on nearby air molecules, creating areas of high and low pressure.