Null

Null may refer to:

Science, technology, and mathematics

Astronomy

• Nuller, an optical tool using interferometry to block certain sources of light

Computing

• Null (SQL) (or NULL), a special marker and keyword in SQL indicating that a data value does not exist, is not known, or is missing.
• 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 virtual file that discards data written to it, on Unix systems /dev/null
• Null pointer or reference (sometimes written NULL, nil, or None), an object pointer (or reference) not currently set to point (or refer) to a valid object

Linguistics

• Null (linguistics) (sometimes zero), a segment that is not pronounced or written:
  • Null morpheme (or zero morpheme), a morpheme that has no phonetic form.
  • Null coda, the coda of syllables ending in a vowel; especially in reference to languages that forbid codas.
  • Null onset (or empty onset, or zero onset), the onset of syllables beginning in a vowel; forbidden in some languages.
  • Null-onset letter (or zero consonant), a consonant letter that does not correspond to a consonant sound, but is required when a word or syllable starts with a vowel.
  • Null-subject language, a language whose grammar permits an independent clause to lack an explicit subject; such a clause is said to have a "null subject".
  • Null copula (or zero copula), a linguistic phenomenon whereby the subject is joined to the predicate without overt marking of this relationship.

Mathematics

• Null (mathematics), a zero value in several branches of mathematics

Physics

• Null (physics), a point in a field where the field quantity is zero
• Null (radio), a concept in electromagnetism

Arts and media

• The Null Corporation, an imprint of the band Nine Inch Nails
• Null (Intronaut EP), 2006
• Null (Foetus EP), 1995
• Null, an identity of the character Gray Fox in the Metal Gear Solid: Portable Ops video game
• Null, a villain from Teenage Mutant Ninja Turtles Adventures
• Null (The Legend of Zelda), the main antagonist of The Legend of Zelda: Echoes of Wisdom
• Null, a mysterious character from Baldi's Basics.

People with the surname

• Ashley Null (born 1960s), American Anglican theologian and bishop
• Christopher Null (born 1971), American writer and film critic
• Cecil Null (1927–2001), American songwriter
• Eduard van der Nüll (1812–1868), Austrian architect
• Gary Null (born 1945), American radio host and author of works about alternative medicine
• Jack Null (1924–2003), American college basketball coach
• Keith Null (born 1985), American football player
• Luke Null (born 1990), American actor and comedian

See also

• ∅ (disambiguation)
• Ø (disambiguation)
• Null symbol (disambiguation)
• 0 (disambiguation)
• Nil (disambiguation)
• Nul (disambiguation)
• Nullity
• Nullification
• Nothing (disambiguation)
• All pages with titles beginning with Null
• All pages with titles containing Null