Heinemann physics 12 : VCE units 3 & 4 / coordinating authors: Doug Bail, Greg Moran ; authors: Keith Burrows, Rob Chapman, Ann Conibear, Carmel Fry, Mark Hamilton, David Madden, Jeffrey Stanger ; contributing authors: Daniela Nardelli, Craig Tilley, Alistair Harkness, Jack Jurica ; iIllustrators: Bruce Rankin and DiacriTech ; indexer: Max McMaster