This is the convention used by essentially all physicists and originates in Dirac's bra-ket notation in quantum mechanics.
sixth form | Daily Racing Form | form | Vida (Occitan literary form) | Sixth form | ETX (form factor) | Closed-form expression | Backus–Naur Form | vida (Occitan literary form) | St John's Catholic School & Sixth Form Centre | Sixth Form | PLK Vicwood KT Chong Sixth Form College | Master (form of address) | Lloyd's Open Form | Kernel Normal Form | Form of the Good | DD Form 214 | closed form | Backus-Naur form | Algebraic normal form | U-form | These joists land on a beam. Between some joists is a form of ''pugging'' used for insulation and air sealing. Image: Rijksdienst voor het Cultureel Erfgoed | The Return to Form Black Magick Party | The final form of Braille's alphabet, according to Henri (1952). The decade diacritics are listed at left, and the supplementary letters are assigned to the appropriate decade at right. Characters are derived by combining the diacritic on the left with the basic letters at top. "(1)" indicates markers for musical and mathematical notation. Parentheses and quotation marks follow English Braille | Static single assignment form | St. Aidan's & St. John Fisher Associated Sixth Form | Scarborough Sixth Form College | Protoma in the form of a bull's head, 8th century BC, gold and filigree, National Museum, Warsaw | Pizza box form factor | Open Form |