Play Video
1
1/2 One Half (二分の一) Rurouni Kenshin Opening 2 LIVE Makoto Kawamoto
1/2 One Half (二分の一) Rurouni Kenshin Opening 2 LIVE Makoto Kawamoto
::2009/02/25::
Play Video
2
Julianna Barwick - One Half (Official Video)
Julianna Barwick - One Half (Official Video)
::2013/08/08::
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3
Candyland Fractions one half
Candyland Fractions one half
::2012/09/02::
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4
Makoto Kawamoto 1/2 - One Half (Samurai X Opening)
Makoto Kawamoto 1/2 - One Half (Samurai X Opening)
::2012/05/03::
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5
[Thai Sub][HD] One and a Half Summer - EP22
[Thai Sub][HD] One and a Half Summer - EP22
::2014/08/28::
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6
[Thai Sub][HD] One and a Half Summer - EP01
[Thai Sub][HD] One and a Half Summer - EP01
::2014/06/28::
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7
Virus.DOS.OneHalf
Virus.DOS.OneHalf
::2013/09/23::
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8
One Direction - Half A Heart
One Direction - Half A Heart
::2013/11/20::
Play Video
9
[Thai Sub][HD] One and a Half Summer - EP19
[Thai Sub][HD] One and a Half Summer - EP19
::2014/08/16::
Play Video
10
[Thai Sub][HD] One and a Half Summer - EP17
[Thai Sub][HD] One and a Half Summer - EP17
::2014/08/10::
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11
[Thai Sub][HD] One and a Half Summer - EP18
[Thai Sub][HD] One and a Half Summer - EP18
::2014/08/13::
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12
[Sub Thai][HD] One and a Half Summer - EP16
[Sub Thai][HD] One and a Half Summer - EP16
::2014/08/02::
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13
Chandler Parsons hits 10 straight three-pointers in ONE HALF!
Chandler Parsons hits 10 straight three-pointers in ONE HALF!
::2014/01/25::
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14
[Thai Sub][HD] One and a Half Summer - EP13
[Thai Sub][HD] One and a Half Summer - EP13
::2014/07/26::
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15
[Thai Sub][HD] One and a Half Summer - EP11
[Thai Sub][HD] One and a Half Summer - EP11
::2014/07/21::
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16
One Direction - Half a Heart (Music Video)
One Direction - Half a Heart (Music Video)
::2013/12/11::
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17
One and A Half Summer  EP1  English Subtitles  Eng sub
One and A Half Summer EP1 English Subtitles Eng sub
::2014/06/26::
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18
[Thai Sub][HD] One and a Half Summer - EP15
[Thai Sub][HD] One and a Half Summer - EP15
::2014/07/31::
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19
[Thai Sub][HD] One and a Half Summer - EP14
[Thai Sub][HD] One and a Half Summer - EP14
::2014/07/29::
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20
Kenshin Himura Opening 2 ESPAÑOL (1/2 One half, Makoto Kawamoto)
Kenshin Himura Opening 2 ESPAÑOL (1/2 One half, Makoto Kawamoto)
::2012/08/11::
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21
[Thai Sub][HD] One and a Half Summer - EP08
[Thai Sub][HD] One and a Half Summer - EP08
::2014/07/15::
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22
[Thai Sub][HD] One and a Half Summer - EP12
[Thai Sub][HD] One and a Half Summer - EP12
::2014/07/23::
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23
Julianna Barwick - "One Half" (Official Audio)
Julianna Barwick - "One Half" (Official Audio)
::2013/06/18::
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24
One Direction - Half A Heart (Lyrics + Pictures) *HD*
One Direction - Half A Heart (Lyrics + Pictures) *HD*
::2013/11/25::
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25
One and a Half Summer Official trailer (7 mins)
One and a Half Summer Official trailer (7 mins)
::2014/05/03::
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26
[Thai Sub][HD] One and a Half Summer - EP05
[Thai Sub][HD] One and a Half Summer - EP05
::2014/07/11::
Play Video
27
Julianna Barwick - One Half (Live on KEXP)
Julianna Barwick - One Half (Live on KEXP)
::2013/12/25::
Play Video
28
[Thai Sub][HD] One and a Half Summer - EP09
[Thai Sub][HD] One and a Half Summer - EP09
::2014/07/17::
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29
Half a heart One Direction Traducida Letra en español
Half a heart One Direction Traducida Letra en español
::2013/12/04::
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30
[HD] 140703 One and a Half Summer - BTS and NG Scenes (Nichkhun)
[HD] 140703 One and a Half Summer - BTS and NG Scenes (Nichkhun)
::2014/07/03::
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31
Julianna Barwick - One Half
Julianna Barwick - One Half
::2013/08/20::
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32
[HD] Let It Rain - One and a Half Summer
[HD] Let It Rain - One and a Half Summer's OST (Nichkhun)
::2014/06/24::
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33
[2PM2U] 2PM Nichkhun - Let it rain - One and a half summer OST (Lyrics and Thaisub)
[2PM2U] 2PM Nichkhun - Let it rain - One and a half summer OST (Lyrics and Thaisub)
::2014/07/04::
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34
[Thai Sub][HD] One and a Half Summer - EP20
[Thai Sub][HD] One and a Half Summer - EP20
::2014/08/19::
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35
[ENG] One and A Half Summer (TV version) EP04 1/3
[ENG] One and A Half Summer (TV version) EP04 1/3
::2014/07/07::
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36
More Than This - Half A Heart | One Direction (Mashup)
More Than This - Half A Heart | One Direction (Mashup)
::2014/03/12::
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37
Virus.DOS.Onehalf Followup/Removal Attempt
Virus.DOS.Onehalf Followup/Removal Attempt
::2013/09/25::
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38
[Thai Sub][HD] One and a Half Summer - EP10
[Thai Sub][HD] One and a Half Summer - EP10
::2014/07/19::
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39
[Thai Sub][HD] One and a Half Summer - EP02
[Thai Sub][HD] One and a Half Summer - EP02
::2014/07/01::
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40
One And A Half Summer MV - Heartbeats
One And A Half Summer MV - Heartbeats
::2014/07/22::
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41
[Thai Sub][HD] One and a Half Summer - EP07
[Thai Sub][HD] One and a Half Summer - EP07
::2014/07/13::
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42
[HD] One and a Half Summer MV - 同一片星空 (The Same Starry Night) by MICHAÉL
[HD] One and a Half Summer MV - 同一片星空 (The Same Starry Night) by MICHAÉL
::2014/07/01::
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43
One Direction - Half A Heart (Lyrics)
One Direction - Half A Heart (Lyrics)
::2013/11/23::
Play Video
44
[HD] 140619
[HD] 140619 'One and a Half Summer' - the kissing scenes BTS (Nichkhun)
::2014/06/19::
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45
[Thai Sub][HD] One and a Half Summer - EP06
[Thai Sub][HD] One and a Half Summer - EP06
::2014/07/11::
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46
[Thai Sub][HD] One and a Half Summer - EP04
[Thai Sub][HD] One and a Half Summer - EP04
::2014/07/11::
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47
ซับไทย One and A Half Summer ฉากในห้องสมุด&เสียงจริงของนิชคุณ
ซับไทย One and A Half Summer ฉากในห้องสมุด&เสียงจริงของนิชคุณ
::2014/07/06::
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48
[Thai Sub][HD] One and a Half Summer  EP17
[Thai Sub][HD] One and a Half Summer EP17
::2014/08/05::
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49
[TIME2SUB] "One and a Half Summer" drama preview - 2PM Nichkhun (eng subs)
[TIME2SUB] "One and a Half Summer" drama preview - 2PM Nichkhun (eng subs)
::2013/09/18::
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50
Amnesia - Half a Heart | 5 Seconds Of Summer & One Direction (Mashup)
Amnesia - Half a Heart | 5 Seconds Of Summer & One Direction (Mashup)
::2014/08/10::
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RESULTS [51 .. 101]
From Wikipedia, the free encyclopedia
  (Redirected from Half)
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For the computer virus, see OneHalf.
"Half" redirects here. For other uses, see Half (disambiguation).
One half
One-half.svg
prefixes hemi- (from Greek)

semi-/demi- (from Latin)

Binary 0.1 or 0.011111111111...
Decimal 0.5 or 0.499999999999...
Dozenal 0.6 or 0.5BBBBBBBBBBBB...
Hexadecimal 0.8 or 0.7FFFFFFFFFFF...
Continued fraction [0; 1, 1] or [0; 2]
Single-precision

floating point

3F000000 (hex) =

00111111000000000000000000000000
(binary)

One half is the irreducible fraction resulting from dividing one by two (½), or any number by its double; multiplication by one half is equivalent to division by two. Conversely, division by one half is equivalent to multiplication by two, or "doubling". One half appears often in mathematical equations, recipes, measurements, etc. Half can also be said to be one part of something divided into two equal parts.

For instance, the area S of a triangle is computed

S = ½ × base × perpendicular height.

One half also figures in the formula for calculating figurate numbers, such as triangular numbers and pentagonal numbers:

½ × n [(s - 2) n - (4 - s)]

and in the formula for computing magic constants for magic squares

M2(n) = ½ × [n (n2 + 1 )].

The Riemann hypothesis states that every nontrivial complex root of the Riemann zeta function has a real part equal to ½.

One half has two different decimal expansions, the familiar 0.5 and the recurring 0.49999999... It has a similar pair of expansions in any even base. It is a common trap to believe these expressions represent distinct numbers: see the proof that 0.999... equals 1 for detailed discussion of a related case.

Particularities in writing and language[edit]

Postal stamp, Ireland, 1940: one halfpenny postage due.

½ is also one of the few fractions to get a key of its own on typewriters (see fractions). It also gets its own point in some early extensions of ASCII at 171; and in Unicode, it gets its own code point at U+00BD (decimal 189) in the C1 Controls and Latin-1 Supplement block, and a cross-reference in the Number Forms block, which contains some other fractions.

One half is as well one of the few fractions which is commonly expressed in natural languages by suppletion rather than regular derivation; compare English one half with regular formations like one sixth from six.

See also[edit]

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