Length

In geometric measurements, length most commonly refers to the longest dimension of an object.

In certain contexts, the term "length" is reserved for a certain dimension of an object along which the length is measured. For example it is possible to cut a length of a wire which is shorter than wire thickness. Another example is FET transistors, in which the channel width may be larger than channel length.

Length may be distinguished from height, which is vertical extent, and width or breadth, which are the distance from side to side, measuring across the object at right angles to the length.

Length is a measure of one dimension, whereas area is a measure of two dimensions (length squared) and volume is a measure of three dimensions (length cubed). In most systems of measurement, the unit of length is a fundamental unit, from which other units are defined.

Read more about Length:  History, Units

Other articles related to "length, lengths":

Length - Units
... In the physical sciences and engineering, when one speaks of "units of length", the word "length" is synonymous with "distance" ... several units that are used to measure length ... Units of length may be based on lengths of human body parts, the distance travelled in a number of paces, the distance between landmarks or places on the Earth, or arbitrarily on ...
File Allocation Table - Technical Design - Boot Sector - BIOS Parameter Block
... are used since DOS 3.0) Sector Offset BPB Offset Length (bytes) Description 0x00B 0x00 2 Bytes per logical sector in powers of two the most common value is 512 ... Sector Offset BPB Offset Length (bytes) Description 0x00B 0x00 13 DOS 2.0 BPB 0x018 0x0D 2 Physical sectors per track for disks with INT 13h CHS geometry, e.g ... Sector Offset BPB Offset Length (bytes) Description 0x00B 0x00 19 DOS 3.0 BPB 0x01E 0x13 2 Total logical sectors including hidden sectors ...
Youth Criminal Justice Act - Purpose of Sentencing - Sentencing Options
... to follow certain rules set out by a probation order for a specific length of time when the time duration has passed, the release becomes absolute ... The length of the custodial sentence and supervision order combined must not exceed two or three years, depending on the type of offence ... Section 42(2)(o) of the YCJA establishes the length of time to be served in custody or in community supervision for cases of attempted murder, manslaughter, aggravated sexual ...
Tongue - Length
... The average length of the human tongue from the oropharynx to the tip is 10 cm (4 in). ...
XFAT - Technical Design - Directory Table - Directory Entry
... see also 8.3 filename) Byte Offset Length (bytes) Description 0x00 8 Short file name (padded with spaces) The first byte can have the following special values Value Description ... cluster value at 0x1A set to 0x0000 and the length entry at 0x1C is never 0x00000000, whereas the entry at 0x1A is always non-zero for pending delete ... Some incompatible extensions found in some operating systems include Byte Offset Length (bytes) System Description 0x0C 2 RISC OS File type, 0x0000–0x0FFF 0x0C 4 Petrov DOSFS File load address ...

Famous quotes containing the word length:

    To find the length of an object, we have to perform certain
    physical operations. The concept of length is therefore fixed when the operations by which length is measured are fixed: that is, the concept of length involves as much as and nothing more than the set of operations by which length is determined.
    Percy W. Bridgman (1882–1961)

    When at length they rose to go to bed, it struck each man as he followed his neighbour upstairs that the one before him walked very crookedly.
    —R.S. (Robert Smith)

    When I had mapped the pond ... I laid a rule on the map lengthwise, and then breadthwise, and found, to my surprise, that the line of greatest length intersected the line of greatest breadth exactly at the point of greatest depth.
    Henry David Thoreau (1817–1862)