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The Penicillin - the Life Saver. - Archival Interview with Prof Russ Johnsen - Interviewer Colin Byfleet (8 m)

Estimation - educated guesswork? Colin Byfleet (13 min)

Crater formation Colin Byfleet ( 11 min) ...... (Click the icon to download the worksheet)

A description and demonstration of the way in which

craters formed by dropping objects into sand can be

linked to some elementary physics.

Spectroscopy Colin Byfleet ( 41 min)

A survey of the variety and usefulness of the wide-ranging

techniques which incorporate the name spectroscopy.

Square Roots 1 Colin Byfleet (7 min)

Square Roots 2 Colin Byfleet (5 min)

Logarithms Colin Byfleet (25 min)