91福利社

Use 91福利社.com or the new 91福利社 App to listen to 91福利社 podcasts, Radio 4 and the World Service outside the UK.

Episode details

World Service,14 Feb 2001,13 mins

Available for over a year

How do we hear sound? How do musical instruments make sound, or acoustic waves? Exciting the air can create something audible. Following an acoustic wave on its journey from instrument to ear.

Programme Website
More episodes