We know of this by recordings made in the zij of astronomers such as Ibn al-Alam.

And the past has been kept fresh (especially for those who can't read musical notation) by recordings.

Dr. Salk tested his theory by broadcasting recordings of a normal heartbeat in a nursery.

This discography includes albums by guitarist Marc Ribot and significant recordings to which he has contributed.

By audio recordings, workers at clinics in six other states reportedly agreed to accept his donation under similar terms.

Johnny was almost exclusively a rhythm guitarist, as exemplified by live recordings.

To qualify for band, strings, and all High School auditions, students must audition by recordings, which are judged by a blind panel of music educators.

The house was an asylum, and the grounds were mostly holo images, backed up by sound recordings and programmed smells.

Sources for these renditions include books by folklorists and commercial recordings by shanty revival performers.

But they also, in this age of heightened historicism, have a body of scholarly information reinforced by recordings that date back to the late 19th century.