About the authors A laser-plasma physicist by training, Anton Machacek has spent most of his professional life teaching physics in secondary schools. He has served as tutor and examiner with the British Physics Olympiad and consulted on a number of developments in physics education. His publications include the university physics primer The Language of Physics (as co-author) and Upgrade Your Physics. Anton is Assistant Head and Director of Sixth Form Studies at Westcliff High School for Boys. Jennifer Crowter is an experienced physics teacher known for the dynamism, discipline and rigour of her lessons. She brings a wealth of experience into her teaching, including national championship trampolining and a commission in the Royal Air Force. Jennifer is Head of Physics at The Royal Grammar School, High Wycombe. Lisa Jardine-Wright is an astrophysicist who lectures in physics and mathematics in the Natural Sciences Tripos at the University of Cambridge. She is part of the admissions team in Natural Sciences at Churchill College, where she is a fellow and tutor.
	About the authors After achieving 6 As in A levels at Danum School, Doncaster, David Follows earned both his masters in Chemistry and DPhil in Physical Chemistry from Oxford University. He is currently Head of Chemistry at Winchester College, and has taught Physics and Chemistry for 14 years, as well as writing exam questions for Cambridge Pre-U Chemistry and being published in the Journal of Chemical Education. He also runs the school chess, croquet and quizzing, and appeared in the 1999/2000 series of University Challenge.
	About the authors Keith Dalby is the Head of Physics at Westcliff High School for Boys, with a philosophy that technology should make lives better for students and teachers both in the classroom and beyond. His experiences as a Scout Leader and his dedication to the promotion of ukulele playing make his lessons varied and engaging.
	About the authors Julia Riley is an astrophysicist at the Cavendish Laboratory. She lectures physics at the University of Cambridge, and is Admissions Tutor and a fellow at Girton College. Mark Warner, FRS, is a professor of theoretical physicist at the Cavendish Laboratory. He lectures and examines physics at the University of Cambridge, and is a fellow at Corpus Christi College where he teaches and where he has for many years done admissions.