Fresnel & diffraction
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Fresnel & diffraction

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here can got the expeimental details with pics of instruments to

here can got the expeimental details with pics of instruments to

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    Fresnel & diffraction Fresnel & diffraction Presentation Transcript

    • Determine the wavelength and thickens of wire by using sodium lamp and by Fresnel biprism and diffraction respectively
      Trisha Banerjee @ 2010
    • Whole setup foe deterring the wavelength of sodium ligh by Fresnel's biprism
      Slit ( source)
      Biprism ( two virtual souse)
      Stand for lens
      Optical bench
      Trisha Banerjee @ 2010 2010
    • Whole setup for determining the diameter of wire by using difrractionin shadow region phenomenon:-
      slit
      source
      Stand for wire
      Screen or eyepiece
      Trisha Banerjee @ 2010
    • SLIT:-
      Screw to setup the slit axis ( i.e. parallel to wire)
      Slit opening
      Screw to adjust the width of the slit
      Screw to adjust the height of the slit
      Trisha Banerjee @ 2010
    • Biprism stand:-
      Screw to adjust the axis of Biprism
      Screw to inset the Biprism properly
      Biprism
      Screw to adjust the height of the biprism
      Tangent screw (to remove the lateral shift of the fringe pattern).
      Trisha Banerjee @ 2010
    • Wire Stand:-
      Screw to adjust the axis of the wire
      Wire to measure the diameter
      Screw to fit the wire stand
      Optical bench
      Tangent screw.
      Trisha Banerjee @ 2010
    • Screen:-
      Micrometer reading
      Screw to rotate the micrometer
      Ramsden’s eyepiece( screen to see the fringes)
      Main scale reading
      Screw to adjust the upright position of screen.
      Trisha Banerjee @ 2010
    • To remove the bench error:-
      Measuring rod
      stand
      slit
      Trisha Banerjee @ 2010
    • How to remove the bench error:-
      first of all measure the length of rod by optical bench and by scale both.
      scale measure the actual length and optical bench measure the apparent one.
      then find the error.
      Precautions:-
      Always first remove the lateral shift then onwards perform the experiment.
      Trisha Banerjee @ 2010