Revise AS Physics aims to offer clear and concise complete course coverage and should be a useful course companion or revision guide. Each title in the Revise AS series adopts a topic by topic approach and features: learning summaries to guide the student through the topic; syllabus checklists beside every study section to ensure maximum relevance to the course; examiner's tips; key point highlights; progress checks to test learning; model answers revealing good practice and offering hints on attaining extra marks; sample questions for AS exam practice; and explanatory diagrams and illustrations to reinforce written content.