11.50 New Hips for Old
Total hip replacement surgery: the history, the materials, the operation.
12.15 Instrumentation: Flow
Place your finger in a draught and it feels cold. A precise measurement of the cooking effect of a hot wire is the basis of a flow meter. Alternatively, place your finger in a stream, and you will often see tiny whirls downstream; the number of whirls gives a measure of the flow rate.
(to 0.45)
