www.circuitcellar.com CIRCUIT CELLAR® Issue 150 January 2003 1 ticular surface and return. Then, the device calculates the distance based on the estimated speed of sound.…
www.galorepark.co.uk 2nd Edition English Susan Elkin Series Editor: Nicholas Oulton M.A. (Oxon.) Book One Published by ISEB Publications, an imprint of Galore Park Publishing…