This is the most popular dictionary of physics available & contains almost 4000 entries covering all commonly encountered physics terms & concepts It also defines many terms from the related fields of astronomy astrophysics & physical chemistry With over 200 new entries & full revision of the existing text A Dictionary of Physics is as essential a reference tool as before The dictionary is generously illustrated with over 120 diagrams graphs & tables & it also contains biographies of important scientists Recommended web links are also included to provide useful & relevant extra information & are accessible & kept up to date via the Dictionary of Physics companion web page Appendices include SI units the solar system & the electromagnetic spectrum plus a list of Nobel Prize winners & a chronology of key dates in physics This fully revised & updated A-Z is an ideal introduction to the subject for anyone with an interest in physics & it remains an indispensable reference work for students of physics & physics-related subjects (either at school or at university) & professionals