null definition of null in the Free Online Encyclopedia.

null

A character that is all 0 bits. Also written as "NUL," it is the first character in the ASCII and EBCDIC data codes. In hex, it displays and prints as 00; in decimal, it may appear as a single zero in a chart of codes, but displays and prints as a blank space.

Nulls are naturally found in binary numbers when a byte contains all zeros, and they are used to pad fields (see padding). A null may function as a delimiter; for example, in C, a null character is inserted at the end of a character string to mark the end of the text.

The Null Is the First

Note the first character at the top of this chart of ASCII characters. The 00 means 0000-0000 bits.

null

1. Maths

a. quantitatively zero

b. relating to zero

c. (of a set) having no members

d. (of a sequence) having zero as a limit

2. Physics involving measurement in which an instrument has a zero reading, as with a Wheatstone bridge

null [nəl]

(mathematics)

Indicating that an object is nonexistent or a quantity is zero.

(navigation)

The azimuth or elevation reading on a navigational device indicated by minimum signal output.

Any of the nodal points on the radiation patterns of some antennas.

(programming)

null - A special value used in several languages to represent the thing referred to by an uninitialised pointer.

A special value that may be stored in some database columns to represent an unknown, missing, not applicable, or undefined value. Nulls are treated completely differently from ordinary values when evaluating SQL expressions and there are several SQL constructs for dealing with nulls.

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No references found	But in such a case, if it should ever happen, the treaty so obtained from us would, like all other fraudulent contracts, be null and void by the law of nations. Federalist Papers Authored by James Madison by Madison, James View in context I asked to be excused in case I should not be able to discharge my debt to all three; for Monsieur Athos has the right to kill me first, which I must abate your valor in your own estimation, Monsieur Porthos, and render yours almost null, Monsieur Aramis. The Three Musketeers by Dumas, Alexandre View in context Let me hasten to add," continued he, "that the testator, having only the right to alienate a part of his fortune, and having alienated it all, the will will not bear scrutiny, and is declared null and void. The Count of Monte Cristo by Dumas, Alexandre View in context	Nuevo Leon Nuevo León Nuffield Nuffield Radio Astronomy Laboratories Nuffield, William Richard Morris, 1st Viscount nugatory Nugget nugget size Nugush NUI nuisance nuisance parameter Nuits de Fourvière Nujoma, Sam Nukša Burial Ground nuke Nuker Nukha Nukhai Batyrmurzaev Nuksa Burial Ground Nuku Hiva Nuku'alofa Nukualofa Nukula Nukus null null allele null cell null character null cone null detection null detector null geodesic null hypothesis Null Indicator null matrix Null Method null modem null modem cable null pointer null reference system null sequence null set null space null string null surface null value null vector null-balance recorder null-current circuit null-current measurement	Nukuler bomb Nukus Nukus Nul Nul Nul Nul Nul NUL (computer) NUL (disambiguation) NUL (disambiguation) NUL (redirect) NUL (redirect) Nul agard Nul disseisin Nul ne doit s'enrichir aux depens des autres Nul prendra advantage de son tort demesne Nul tiel record Nul tort Nul waste Nulasta NULC NULCA NuLev NULGE Nulia bona NULIS NULITES Nulius filius NULJ null Null (Character) Null (Character) Null allele Null allele Null allele Null alleles Null and Void Null and Void Null and Void Null and Void Null and Void Null and Void Null Attachment Concentrator null c's null c's null c's null c's null cell null cell null cell null cell null cells null cells null cells null cells null character null character null characters null characters Null Command Generator

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But in such a case, if it should ever happen, the treaty so obtained from us would, like all other fraudulent contracts, be null and void by the law of nations.

Federalist Papers Authored by James Madison by Madison, James View in context

I asked to be excused in case I should not be able to discharge my debt to all three; for Monsieur Athos has the right to kill me first, which I must abate your valor in your own estimation, Monsieur Porthos, and render yours almost null, Monsieur Aramis.

The Three Musketeers by Dumas, Alexandre View in context

Let me hasten to add," continued he, "that the testator, having only the right to alienate a part of his fortune, and having alienated it all, the will will not bear scrutiny, and is declared null and void.

The Count of Monte Cristo by Dumas, Alexandre View in context

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