Student Societies listing of physics and astronomy university, college and high-school societies.
Journals links to professional and popular journals.
Publishers links to physics and astronomy books and journals publishers.
Companies links to top high-technology companies that make products for physicists, astronomers, engineers and students.
'For the sake of persons of ... different types, scientific truth should be presented in different forms, and should be regarded as equally scientific, whether it appears in the robust form and the vivid coloring of a physical illustration, or in the tenuity and paleness of a symbolic expression.'