PARTICLE SIZE MEASUREMENT SK172
Exp-1 Determination the wavelength of He-Ne laser using diffraction grating.
Exp-2 Determination the particle size of lycopodium powder.
- Imported slits.
- He-Ne laser with in-built power supply.
- Translucent screen to view the diffraction pattern.
- Diffraction.
- Fresnel diffraction.
- Fraunhofer diffraction
- Uncertainty of location.
- Wave-particale.
Shine an expended He-Ne laser beam through a plate dusted with lycopodium powder to construct circular rings on the screen which are nearly spherical and have a very uniform average diameter. The quality of the ring depends on the evenness of dusting.
Wavelength of given laser source of light
Where
n - Order of diffraction
l - Wavelength of laser used in meter
D - Distance between glass plate and screen in meter
xn - Distance between central bright spot and the nth fringe in meter
Contents:
| Cat. No. | Item Name | Qty |
| R3891 | He-Ne laser | 1 |
| C1734 | Optical Bench | 1 |
| C1734 | Screen (30 x 30 cm) | 1 |
| SJ095 | Microscope slides set of 100 pcs. | 1 |
| SL745 | Diffraction grating | 1 |
| CD555 | Slit holder | 1 |
| C4737 | Slit (Blade) | 1 |
| SP124 | Measuring tape (3 m) | 1 |
| Lycopodium powder 50gm | 1 |
- He-Ne Laser R3891
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SPECIFICATIONS Wavelength : 632.8nm
Working Current : 4mA ~ 6mA)
Output Power : > 2mW
Working Time : > 8 hrs.
Working Voltage : 220V AC, 50Hz
Input Power : <2 W
Dimension : 300x62x82 mm
Weight : 1.5 kg (approx.)
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- Optical Bench C1734
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SPECIFICATIONS Material : Aluminium alloy
Type : Hexagonal section
Scale : 0-100cm
Least count : 1mm
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- Diffraction Grating SL745
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SPECIFICATIONS Material : Metal Sheet
Size : 150 x 150 mm
Rod : 10 mm diameter
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- Object Screen C1734
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SPECIFICATIONS Material : Metal Sheet
Size : 300 x 300 mm
Rod : 10 mm diameter
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- Slit Holder CD555
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SPECIFICATIONS Clear Aperture : 45x45mm
Object holder : Clip type
Mounting Rod : 10mm diameter
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- Measuring Tape SP124
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SPECIFICATIONS Length : 3m
Least Count : 1mm
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* Additionally Required
Oscilloscope >40MHz is not supplied with the setup.
Light & Optics Experiments
- Spectrometry Kit
- Michelson Interferometer
- Precision Interferometer (Imported)
- Holography & Interferometry Kit (Imported)
- Two Beam Interference
- Newton's Rings Apparatus
- Advanced polarimeter
- Laurent's Half Shade Polarimeter
- Polarization of Light & Verification of Malus Law
- Polarization of Light by Half-Wave Plate
- Polarization of Light by Quarter-Wave Plate
- Kerr Effect
- Faraday Effect
- Diode Laser Kit
- Diode Laser Diffraction Experiment
- He-Ne Laser kit
- Focal Length of Combination of Lenses Using Nodal Slide Assembly
- Optical Fiber Kit
- Optics Experiment Kit
- Resolving Power of a Telescope
- Speed of Light
- Particle Size Measurement
- Photoconductivity