Null
In computing
- Null (SQL), a special marker and keyword in SQL
- 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 that discards all data written to it
- Null modem, a specially wired serial communications cable
- Null Object pattern, a software design pattern using an object with defined neutral behavior
- Null pointer (sometimes written
NULL), 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)
- Null-terminated string, a character string of which the length is determined by the first null-character (in programming language C and related languages)
- Nullable type, a feature of some statically-typed programming languages which allows a data type to be set to the special value NULL
In art
- KK Null (born 1961), Japanese musician
- 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
- The Null Corporation, the current imprint for Nine Inch Nails
- Null (Intronaut EP)
- Null (Foetus EP), 1995
In 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
In science
- Null allele (genetics)
- Null cipher, a ciphertext symbol
- Null hypothesis, a concept in statistical hypothesis testing
- Null morpheme, a concept in linguistics
- Null (radio), a concept in electromagnetism
- Null result, the absence of a hypothesized effect in the outcome of a scientific experiment
- Null vectors or curves in the causal structure of a Lorentzian manifold such as a Minkowski space-time
- Null (physics), a point in a field where the field quantity is zero
People
- 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
Other
- 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"
See also
- Ø (disambiguation)
- Null symbol (disambiguation)
- 0 (disambiguation)
- Nil (disambiguation)
- Nul (disambiguation)