Exp-1 Determination the wavelength of He-Ne laser using diffraction grating.
Exp-2 Determination the particle size of lycopodium powder.
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
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
|Cat. No.||Item Name||Qty|
|C1734||Screen (30 x 30 cm)||1|
|SJ095||Microscope slides set of 100 pcs.||1|
|SP124||Measuring tape (3 m)||1|
|Lycopodium powder 50gm||1|
* Additionally Required
Oscilloscope >40MHz is not supplied with the setup.