the effects of temperature on sound speed, and the phenomenon of refraction. It describes the anatomy of the human ear, how sound is transmitted and perceived, and the range of frequencies the ear ...

The content discusses the fundamentals of acoustics, focusing on sound refraction, the anatomy of the ear, and how sound waves are perceived. It explains how sound travels through the ear ...

Ultrasound scans could soon be much more detailed, thanks to a novel material that can bend sound waves the “wrong” way. This property, known as negative refraction, means the material should ...

Ultrasound close ultrasoundSound with a frequency greater than 20,000 Hz (20 kHz). is sound with a frequency greater than 20,000 Hz. Humans cannot hear ultrasound but many other animals can ...

That property is called an index of refraction, i.e., the ratio between ... The secret to blocking or transmitting sound lies in the structure: in this case, the space between an array of pillars.

Save guides, add subjects and pick up where you left off with your BBC account. Refraction close refractionProcess by which a wave changes speed and sometimes direction upon entering a denser or ...