ચિત્ર:Diode laser.jpg

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વિકિપીડિયામાંથી

મૂળભુત ફાઇલ ‎(૩,૦૬૦ × ૨,૦૩૬ પીક્સલ, ફાઇલનું કદ: ૧.૦૫ MB, MIME પ્રકાર: image/jpeg)

આ ફાઇલ Wikimedia Commonsનો ભાગ છે અને શક્ય છે કે અન્ય પ્રકલ્પોમાં પણ વપરાઇ હોય. ત્યાંનાં મૂળ ફાઇલનાં વર્ણનનાં પાના પર આપેલું વર્ણન નીચે દર્શાવેલું છે.

સારાંશ:

વર્ણન
English: Original caption: "This technology is known as a Tunable Diode Laser (TDL) gas sensor. The heart of the TDL system is a small laser diode (about 2mm square) that produces a narrow and specific wavelength of light tuned to a harmonic frequency of the water vapor molecule in the near infrared band. The light causes the molecule to vibrate and absorb the energy.

Once adjusted to the specific frequency of the molecule, the laser is minutely tuned to different wavelengths on either side of the target wavelength. By comparing the light energy being absorbed at the water vapor frequency, to the light energy at the surrounding frequencies, a very precise measurement can be made. Multiple measurements are made every second, making the system quick to respond to variations in the target gas.

TDL gas sensing technology is particularly good at detecting low levels of gases at the parts per million or even parts per billion level. With the vast majority of manufactured products relying more and more on gas measurement of some kind, commercial applications for this technique are broad. In every environment from wafer fabrication process control in the semiconductor industry to detecting trace levels of noxious gases in stack emissions, TDLs will be making news in the industrial and environmental monitoring sectors of the economy for years to come."
તારીખ (Date from the IPTC metadata of the original TIFF version)
સ્રોત Jet Propulsion Laboratory website: http://technology.jpl.nasa.gov/gallery/index.cfm?page=imageDetail&ItemID=120&catId=8 (archive)
લેખક
આ ફાઈલમાં લેખક માહિતી ખૂટે છે.
This image has currency in it to indicate scale.

Using coins for scale is discouraged as it will require people unfamiliar with them to look up the dimensions or guess, both of which defeat the purpose of the object in the first place. Coins can also reinforce a geographical bias, and some coins' designs are copyrighted.

Ideally, a photograph should include a ruler with the subject (example) or an added scale marking. SI ("metric") units are the most commonly used worldwide (see meter and centimeter).

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Common coin diameters for reference:

  • U.S. dollar (as of?):
    • 1¢: 19.05 mm, 0.75 in
    • 5¢: 21.21 mm, 0.84 in
    • 10¢: 17.91 mm, 0.71 in
    • 25¢: 24.26 mm, 0.94 in
    • 50¢: 30.61 mm, 1.22 in
    • $1: 26.5 mm, 1.02 in
  • Canadian dollar (as of?):
    • 1¢: 19.05 mm, 0.75 in
    • 5¢: 21.2 mm, 0.83 in
    • 10¢: 18.03 mm, 0.71 in
    • 25¢: 23.88 mm, 0.94 in
    • 50¢: 27.13 mm, 1.07 in
    • $1: 26.5 mm, 1.02 in
    • $2: 28 mm, 1.1 in
  • Pound sterling as of 2021:
    • 1p: 20.32 mm, 0.8 in
    • 2p: 25.91 mm, 1.02 in
    • 5p: 18 mm, 0.71 in
    • 10p: 24.5 mm, 0.96 in
    • 20p: 21.4 mm, 0.84 in
    • 50p: 27.3 mm, 1.07 in
    • £1: 23.03–23.43 mm, 0.91–0.92 in
    • £2: 28.4 mm, 1.12 in
  • Euro as of 2002:
    • 1c: 16.25 mm, 0.64 in
    • 2c: 18.75 mm, 0.74 in
    • 5c: 21.25 mm, 0.84 in
    • 10c: 19.75 mm, 0.78 in
    • 20c: 22.25 mm, 0.88 in
    • 50c: 24.25 mm, 0.95 in
    • €1: 23.25 mm, 0.92 in
    • €2: 25.75 mm, 1.01 in

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પરવાના

Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
Warnings:

અસલ - મૂળ અપલોડનો લોગ

The original description page was here. All following user names refer to en.wikipedia.
  • 2005-08-27 16:09 Deglr6328 3060×2036×8 (1096300 bytes) original caption: "This technology is known as a Tunable Diode Laser (TDL) gas sensor. The heart of the TDL system is a small laser diode (about 2mm square) that produces a narrow and specific wavelength of light tuned to a harmonic frequency of the water

Captions

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Laser diode

Items portrayed in this file

દર્શાવે છે

laser diode અંગ્રેજી

ફાઇલનો ઇતિહાસ

તારીખ/સમય ઉપર ક્લિક કરવાથી તે સમયે ફાઇલ કેવી હતી તે જોવા મળશે.

તારીખ/સમયલઘુચિત્રપરિમાણોસભ્યટિપ્પણી
વર્તમાન૦૮:૧૭, ૭ જુલાઇ ૨૦૦૭૦૮:૧૭, ૭ જુલાઇ ૨૦૦૭નું લઘુચિત્ર સંસ્કરણ૩,૦૬૦ × ૨,૦૩૬ (૧.૦૫ MB)Seedermaster~commonswiki{{Information |Description=original caption: "This technology is known as a Tunable Diode Laser (TDL) gas sensor. The heart of the TDL system is a small laser diode (about 2mm square) that produces a narrow and specific wavelength of light tuned to a harm

આ ફાઇલને કોઇ પાનાં વાપરતા નથી.

ફાઇલનો વ્યાપક ઉપયોગ

નીચેની બીજી વિકિઓ આ ફાઈલ વાપરે છે:

આ ફાઇલના વધુ વૈશ્વિક વપરાશ જુઓ.

મૅટાડેટા

આ માધ્યમ સાથે વધુ માહિતી સંકળાયેલી છે, જે સંભવતઃ માધ્યમ (ફાઇલ) બનાવવા માટે ઉપયોગમાં લેવાયેલા ડિજીટલ કેમેરા કે સ્કેનર દ્વારા ઉમેરવામાં આવી હશે.


જો માધ્યમને તેના મૂળરૂપમાંથી ફેરફાર કરવામાં આવશે તો શક્ય છે કે અમુક માહિતી પૂરેપૂરી હાલમાં છે તેવી રીતે ન જળવાઈ રહે.

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