Goniometer Based Apparatus for diffraction experiments (Model No: HO-ED-D-03) is, designed as a versatile instrument suitable for any optics laboratory. It’s optical rail based construction allows the user to configure it for multitudes of applications.
The apparatus can be used for studying both reflecting and transmitting type diffracting elements. Unlike conventional spectrometergoniometers, all modules in this device are open, simple and easy to assimilate. This feature gives students better understanding.
The apparatus can also be used for many other applications like measurement of prism angles, refraction angle etc., where spectrometergoniometers are generally used. All components are made from corrosion free laboratory grade materials. Optical components are made of research quality N-BK 7 optical glass.
This apparatus consists of a goniometer for measuring diffraction angle directly and a precision adjustable slit through which light passes before falling on the diffracting element. The function of goniometer and positioning stage is to establish and control the geometric relationship between the incident beam, diffraction cell and telescope. The goniometer is also the supporting base to many components, such as the optics, diffraction cell stage, telescope and so on. The equipment is specifically suited for studying elements with considerably greater diffraction angles, like holographic gratings. As the readings are taken through an eyepiece with cross wire, precise results are achieved.
The diffraction equation (condition for minima) is,
Sin θm = m λ / d
Where d is the slit width, m is the order, λ is the wavelength of laser used and θm is the angle subtended within the central maximum and mth order minimum.
From this we can find out the slit width d as
d = m λ / Sin θm
The diffraction equation (condition for maxima) is,
Sin θm = m λ / d
Where d is the slit width, m is the order, λ is the wavelength of laser used and θm is the angle subtended within the central maximum and mth order minimum.
From this we can find out the slit width d as
d = m λ / Sin θm
The diffraction equation (condition for maxima) is,
Sin θm = m λ / d
Where d is the slit width, m is the order, λ is the wavelength of laser used and θm is the angle subtended within the central maximum and mth order minimum.
From this we can find out the slit width d as
d = m λ / Sin θm
The diffraction equation (condition for maxima) is,
Sin θm = m λ / d
Where d is the slit width, m is the order, λ is the wavelength of laser used and θm is the angle subtended within the central maximum and mth order minimum.
From this we can find out the slit width d as
d = m λ / Sin θm
The diffraction equation (condition for maxima) is,
Sin θm = m λ / d
Where d is the slit width, m is the order, λ is the wavelength of laser used and θm is the angle subtended within the central maximum and mth order minimum.
From this we can find out the slit width d as
d = m λ / Sin θm
The diffraction equation (condition for maxima) is,
Sin θm = m λ / d
Where d is the slit width, m is the order, λ is the wavelength of laser used and θm is the angle subtended within the central maximum and mth order minimum.
From this we can find out the slit width d as
d = m λ / Sin θm
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