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MICROMETER  (READ EASILY) हिन्दी  ! LEARN AND GROW
MICROMETER (READ EASILY) हिन्दी ! LEARN AND GROW
Published: 2016/12/21
Channel: LEARN AND GROW
Reading a Standard Micrometer.mp4
Reading a Standard Micrometer.mp4
Published: 2010/07/31
Channel: motoprof1441
How to read Micrometer (in hindi)
How to read Micrometer (in hindi)
Published: 2017/12/19
Channel: info Trade
Usinage - Mesurer au micromètre
Usinage - Mesurer au micromètre
Published: 2013/03/27
Channel: AfpaWebTv
How to Read a Metric Micrometer by WeldNotes.com
How to Read a Metric Micrometer by WeldNotes.com
Published: 2014/03/31
Channel: WeldNotes.com
Lecture on Micrometer [in Hindi]
Lecture on Micrometer [in Hindi]
Published: 2016/10/18
Channel: jalees ahmed
How to Use a Micrometer
How to Use a Micrometer
Published: 2014/07/28
Channel: SMUPhysics
HD - How to Use a Depth Micrometer
HD - How to Use a Depth Micrometer
Published: 2011/09/16
Channel: lsstarrett
How To Read Micrometers
How To Read Micrometers
Published: 2011/03/03
Channel: The Tool and Die Guy
Reading a Vernier Caliper and a Micrometer
Reading a Vernier Caliper and a Micrometer
Published: 2012/10/24
Channel: hanoverhighindians
Dial Caliper, Vernier Caliper and Micrometer Tutorial
Dial Caliper, Vernier Caliper and Micrometer Tutorial
Published: 2014/04/17
Channel: WWU Engineering and Design
Reading a Metric Micrometer.mp4
Reading a Metric Micrometer.mp4
Published: 2010/08/01
Channel: motoprof1441
eMCC0287 : Measurement of vernier calliper and micrometre screw gauge (JMSK)
eMCC0287 : Measurement of vernier calliper and micrometre screw gauge (JMSK)
Published: 2015/08/27
Channel: POLITEKNIK MUADZAM SHAH eDOLA
How to - Read an Inch Micrometer
How to - Read an Inch Micrometer
Published: 2014/09/23
Channel: lsstarrett
Micrometer in hindi Mechanical engineering in hindi
Micrometer in hindi Mechanical engineering in hindi
Published: 2017/06/09
Channel: Mechanical Engineering in hindi
Digital Micrometer Use from Mitutoyo
Digital Micrometer Use from Mitutoyo
Published: 2016/11/11
Channel: MitutoyoAmerica
(:UnBox & Review:) iGaging EZMic Digital Micrometer ~Absolute Origin, .00005" Resolution
(:UnBox & Review:) iGaging EZMic Digital Micrometer ~Absolute Origin, .00005" Resolution
Published: 2014/02/06
Channel: GadgetClass
How to Read an Inch Micrometer.wmv
How to Read an Inch Micrometer.wmv
Published: 2011/01/28
Channel: etprof
HD How to Read a Metric Micrometer
HD How to Read a Metric Micrometer
Published: 2013/12/18
Channel: Travers Tool Co
الدرس 6 : القياس باستعمال  micrometre
الدرس 6 : القياس باستعمال micrometre
Published: 2017/06/13
Channel: تعلم ببساطة
16 Micrometre maintenance
16 Micrometre maintenance
Published: 2016/09/27
Channel: Interspeech
Micrometer
Micrometer
Published: 2013/06/29
Channel: elearning softtech
Calibrating and Reading an Inch Micrometer Caliper
Calibrating and Reading an Inch Micrometer Caliper
Published: 2011/05/19
Channel: machiningmoments
How to Read Micrometers
How to Read Micrometers
Published: 2017/08/23
Channel: Stuart de Haro
How to read the Micrometer Screw Gauge
How to read the Micrometer Screw Gauge
Published: 2012/06/06
Channel: ohmingyeo
MICROMETER TAMIL TUTORIAL
MICROMETER TAMIL TUTORIAL
Published: 2017/10/06
Channel: CNC LATHE FANUC
Easy way to repair and calibrate micrometers
Easy way to repair and calibrate micrometers
Published: 2016/09/23
Channel: Joe Schueler
Micrometer Basics:  Use, Care and Calibration
Micrometer Basics: Use, Care and Calibration
Published: 2015/09/02
Channel: Keith Rucker - VintageMachinery.org
Micrometer Screw Gauge - Taking Reading | Introduction to Physics
Micrometer Screw Gauge - Taking Reading | Introduction to Physics
Published: 2014/07/14
Channel: myhometuition
Micrometers, How to read a micrometer.
Micrometers, How to read a micrometer.
Published: 2016/08/10
Channel: kevin ging
LEAST COUNT OF MICROMETER
LEAST COUNT OF MICROMETER
Published: 2017/05/14
Channel: Industrial Tech
Mitutoyo VS Harbor Freight ....The Digital Micrometer show down
Mitutoyo VS Harbor Freight ....The Digital Micrometer show down
Published: 2015/12/11
Channel: Build Something Cool
SHOP TIPS #302 Calibrating a Fowler Micrometer tubalcain
SHOP TIPS #302 Calibrating a Fowler Micrometer tubalcain
Published: 2016/05/07
Channel: mrpete222
How to measure with an inside micrometer
How to measure with an inside micrometer
Published: 2015/07/14
Channel: SuburbanTool Inc
Micrometer Calibration 12-8-14
Micrometer Calibration 12-8-14
Published: 2014/12/08
Channel: Shane Conley
A Micrometre Transferred to Everyday Life
A Micrometre Transferred to Everyday Life
Published: 2015/08/10
Channel: MitutoyoEuropeGmbH
Micrometer use and calibration
Micrometer use and calibration
Published: 2011/12/25
Channel: Grant Logsdon
A Level Practical Endorsement - Calipers vs Micrometers (and how to use them)
A Level Practical Endorsement - Calipers vs Micrometers (and how to use them)
Published: 2015/11/20
Channel: A Level Physics Online
The Inside Micrometer Video
The Inside Micrometer Video
Published: 2012/09/21
Channel: Grant Logsdon
Types of Micrometers
Types of Micrometers
Published: 2011/09/08
Channel: machiningmoments
Reloading Essentials: RCBS Ball Micrometer
Reloading Essentials: RCBS Ball Micrometer
Published: 2016/08/03
Channel: gavintoobe
Laser Scan Micrometers
Laser Scan Micrometers
Published: 2014/07/16
Channel: GreatGages.com
The Micrometer - History and Proper use by Don Bailey
The Micrometer - History and Proper use by Don Bailey
Published: 2015/03/03
Channel: SuburbanTool Inc
MACHINE SHOP TIPS #21 Micrometers Part 1 tubalcain
MACHINE SHOP TIPS #21 Micrometers Part 1 tubalcain
Published: 2011/01/07
Channel: mrpete222
HOW TO USE A MICROMETER SCREW GAUGE (IN URDU /HINDI)
HOW TO USE A MICROMETER SCREW GAUGE (IN URDU /HINDI)
Published: 2017/12/05
Channel: Pharero Academy
Adjusting The Forster In - Line Micrometer Bullet Seating Die For 308
Adjusting The Forster In - Line Micrometer Bullet Seating Die For 308
Published: 2016/07/25
Channel: FortuneCookie45LC
Preview Micrometer Simulator
Preview Micrometer Simulator
Published: 2016/10/11
Channel: Uboiz App Page
How to take readings of outside Micrometer (kannada )
How to take readings of outside Micrometer (kannada )
Published: 2017/03/06
Channel: ಯಂತ್ರ ಜ್ಞಾನ
10 Best Micrometers 2017
10 Best Micrometers 2017
Published: 2017/06/02
Channel: Ezvid Wiki
How to use a screw gauge (micrometer)
How to use a screw gauge (micrometer)
Published: 2016/08/03
Channel: Engineers inc.
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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Micrometre
Cfaser haarrp.jpg
a 6 μm diameter carbon filament,
compared to 50 μm diameter human hair
Unit information
Unit system metric
Unit of length
Symbol μm 
Unit conversions
1 μm in ... ... is equal to ...
   SI units    1×10−6 m
   Natural units    6.1877×1028 P
1.8897×104 a0
   imperial/US units    3.2808×10−6 ft
 3.9370×10−5 in

The micrometre (International spelling as used by the International Bureau of Weights and Measures;[1] SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is an SI derived unit of length equaling 1×10−6 metre (SI standard prefix "micro-" = 10−6); that is, one millionth of a metre (or one thousandth of a millimetre, 0.001 mm, or about 0.000039 inch).[1]

The micrometre is a common unit of measurement for wavelengths of infrared radiation as well as sizes of biological cells and bacteria,[1] and for grading wool by the diameter of the fibres.[2] The width of a single human hair ranges from approximately 10 to 200 μm. The first and longest human chromosome is approximately 10μm in length.

Examples[edit]

Between 1 μm and 10 μm:

Between 10 μm and 100 μm

  • 10 to 55 μm – width of wool fibre[5]
  • 17 to 181 μm – diameter of human hair [6]
  • 70 to 180 μm – thickness of paper

SI standardization[edit]

The term micron and the symbol μ were officially accepted for use in isolation to denote the micrometre in 1879, but officially revoked by the International System of Units (SI) in 1967.[7] This became necessary because the older usage was incompatible with the official adoption of the unit prefix micro-, denoted μ, during the creation of the SI in 1960. In the SI, the systematic name micrometre became the official name of the unit, and μm became the official unit symbol.

Nevertheless, in practice, "micron" remains a widely used term in preference to "micrometre" in many English-speaking countries, both in academic science (including geology, biology, physics, and astronomy) and in applied science and industry (including machining, the semiconductor industry, and plastics manufacturing).[citation needed] Additionally, in American English the use of "micron" helps differentiate the unit from the micrometer, a measuring device, because the unit's name in mainstream American spelling is a homograph of the device's name. In spoken English, they may be distinguished by pronunciation, as the name of the measuring device is invariably stressed on the second syllable, whereas the systematic pronunciation of the unit name, in accordance with the convention for pronouncing SI units in English, places the stress on the first syllable.

The plural of micron is normally "microns", though "micra" was occasionally used before 1950.[8][9][10]

Symbol[edit]

The official symbol for the SI prefix micro- is a Greek lowercase mu (μ).[11] In Unicode, there is also a micro sign with the codepoint U+00B5 (µ), distinct from the codepoint U+03BC (μ) of the Greek letter lowercase mu, so that machines can recognize it as the SI prefix symbol rather than as a letter. According to The Unicode Consortium, the Greek letter character is preferred,[12] but implementations must recognize the micro sign as well. Most fonts use the same glyph for the two characters.

See also[edit]

Notes and references[edit]

  1. ^ a b c "micrometre". Encyclopædia Britannica Online. Retrieved 18 May 2014. 
  2. ^ "Wool Fibre". "NSW Department of Education and Communities". Retrieved 18 May 2014. 
  3. ^ Smith, D.J. (2009). "Human sperm accumulation near surfaces: a simulation study" (PDF). Journal of Fluid Mechanics. 621: 295. Bibcode:2009JFM...621..289S. doi:10.1017/S0022112008004953. Retrieved 20 May 2012. 
  4. ^ Gordon Ramel. "Spider Silk". Archived from the original on 4 December 2008. Retrieved 2008-12-04. garden spider silk has a diameter of about 0.003 mm ... Dragline silk (about .00032 inch (.008 mm) in Nephila) 
  5. ^ IST - Innovative Sintering Technologies Ltd. "Fibreshape applications". Retrieved 2008-12-04. Histogram of cotton thickness 
  6. ^ According to The Physics Factbook, the diameter of human hair ranges from 17 to 181 μm. Ley, Brian (1999). "Width of a Human Hair". The Physics Factbook. 
  7. ^ BIPM - Resolution 7 of the 13th CGPM (1967/68), "Abrogation of earlier decisions (micron, new candle.)"
  8. ^ "Proceedings of the Royal Society of Queensland". google.com.br. 
  9. ^ "The Observer". google.com.br. 
  10. ^ [10 micra/10 microns https://books.google.com/ngrams/graph?content=10+micra%2F10+microns&year_start=1885&year_end=2000&corpus=15&smoothing=3&share=&direct_url=t1%3B%2C%2810%20micra%20/%2010%20microns%29%3B%2Cc0]
  11. ^ Prefixes of the International System of Units, International Bureau of Weights and Measures (page visited on 9 May 2016).
  12. ^ Unicode Technical Report #25

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