Null
Science, technology, and mathematics
Computing
- Null (SQL) (or NULL), a special marker and keyword in SQL indicating that something has no value
- Null character, the zero-valued ASCII character, also designated by NUL, often used as a terminator, separator or filler. This symbol has no visual representation
- Null device, a special computer file, named
/dev/nullon Unix systems, that discards all data written to it - Null modem, a specially wired serial communications cable
- Null pointer (sometimes written
NULL,nil, orNone), used in computer programming for an uninitialized, undefined, empty, or meaningless value - Null string, the unique string of length zero (in computer science and formal language theory)
Mathematics
- Null (mathematics), a zero value in several branches of mathematics
- Null set, a set that is negligible in some sense
- Also an older term for the empty set
Physics
- Null (physics), a point in a field where the field quantity is zero
- Null (radio), a concept in electromagnetism
- Null vectors or curves in the causal structure of a Lorentzian manifold such as a Minkowski space-time
Other uses in science and technology
- Null allele, in genetics
- Null cipher, a ciphertext symbol
- Null hypothesis, a concept in statistical hypothesis testing
- Null morpheme, a concept in linguistics
- Null result, the absence of a hypothesized effect in the outcome of a scientific experiment
Arts and media
Music
- KK Null (born 1961), Japanese musician
- The Null Corporation, an imprint of the band Nine Inch Nails
- Null (Intronaut EP), 2006
- Null (Foetus EP), 1995
Other media
- Null, an identity of the character Gray Fox in the Metal Gear Solid: Portable Ops video game
- Null, man-eating sentients in the Downs-Lord Triptich books by John Whitbourn
- Null, the Living Darkness, a Marvel Comics character
- Null, a villain from Teenage Mutant Ninja Turtles Adventures
- Nulls, worm-like remains of defeated characters in the animated program ReBoot
- Type: Null, a Gen VII Pokémon species introduced in Pokémon Sun and Moon
People with the surname
- Christopher Null (born 1971), American film critic
- Eduard van der Nüll (1812–1868), Austrian architect
- Gary Null (born 1945), American radio host and author on alternative medicine
- Keith Null (born 1985), American football player
- KK Null (born 1961), Japanese musician
Other uses
- Null and void, having no legal validity
- Null-A, a term used in science fiction, referring to Korzybski's notation as an abbreviation for "non-Aristotelian" logic
- Stunde Null, a term used in Germany to mark the end of the Second World War
See also
- Ø (disambiguation)
- Null symbol (disambiguation)
- 0 (disambiguation)
- Nil (disambiguation)
- Nul (disambiguation)
- All pages with titles beginning with Null
- All pages with titles containing Null
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.