PPT-PRINCIPLE OF OPTICAL MEASURING INSTRUMENTS

INTERFERENCE When two wave trains of the same frequency amp the same amplitude traveling in the same direction are superimposed on one another they produce interference If at any point the waves are in phase there is an increase in resultant amplitude ie . This Chapter does not cover articles of a kind used in machines appliances or for other technical uses of vulcanised rubber other than hard rubber heading 4016 of leather or of composition leather heading 4205 or textile material heading 5911 s www.kruess.com MEASURING QUALITY. SINCE 1796 2 3 emission and absorption spectra, e.g. for checking the line • Slit • Angle C–F• Lineardispersion 60 (direct• Slit &# For increasing the accuracy of direct observation methods, following mechanical means of magnification are adopted:. Lever method. Vernier. method. Screw & Screw nut method. 17/02/2012. 1. lec # 11 & 12. 5. th. Term, Batch: . 20010. 10/2/2012. lec no. 8 & 9. 1. DEFINATIONS. Measure:. . It is the numerical evaluation of a dimension or a property of comparison with standard of same kind. Compare:. STADIA : Optical Optical instruments require a vertical and horizontal crosshair to be functional. Some optical instruments also have two short horizontal lines, one above and one below the horizon S. R. Kulkarni. Caltech Optical Observatories. Workhorse Instruments. Optical Imagers & Spectrographs. NIR Imagers & Spectrographs and so on. Specialized Instruments. Polarimeters. , Rapid spectroscopy, .. . MEASURING . INSTRUMENT- DEFINITION. “ The . device used for comparing the unknown quantity with the unit of measurement or standard quantity is called a Measuring Instrument.”. . The selection of measuring instruments depends on the measurement to be performed.. 1. The . range and magnitude of the parameter to be measured and the accuracy of the. measurement (the instrument should have the range to cover effectively the range. By: . Nafees. Ahmed, . Asstt. , Prof, EE . Deptt. , . DIT, Dehradun . MEASURING INSTRUMENTS. “The device used for comparing the unknown quantity with the unit of measurement or standard quantity is called a Measuring Instrument.”. OPTICAL STRAIN GAUGE. . Marten’s mirror extensometer. Tuckerman optical strain gauge. Marten’s mirror extensometer. Working Principle. To measure Elongation. Developed by Peterson and Wahl in 1936. INSTRUMENT- DEFINITION. “ The . device used for comparing the unknown quantity with the unit of measurement or standard quantity is called a Measuring Instrument.”. . OR. “ . Scott DeWolf. Larry Murdoch, Liwei Hua, Hai Xiao, Leonid Germanovich, Stephen Moysey, and Alexander Hanna. Clemson University. In cooperation with UNAVCO and Grand Resources, Inc.. Funded by U.S. Department of Energy National Energy Technology Laboratory. Key Activities - 2018 / 2019. Presenters – . Mikuko. Hamada, . Toshiyuki . Takatsuji. , Hajime . Nemoto. and Tsuyoshi Matsumoto. Reformation of Legal Metrology System. Cabinet orders . and . ministerial ordinances . Brian C. Smith, Ph.D. ,Princeton Instruments . Jason McClure, Ph.D. Princeton Instruments. Dan Heller, Ph.D. Memorial Sloan-Kettering Cancer Center. Ed Gooding, Ph.D. Princeton Instruments. An Aberration Free Spectrograph for .