Diffraction halos / Lycopodium experiment

a) Laser

Type: Semiconductor diode Laser
Wavelength: 625 nm (Red)
Output power: 3 mW
Mount: Cast iron base with levelling screw

Power supply
Output: Suitable for 3 mW & 5 mW semiconductor Lasers
Rated Input: 220 V/50 Hz or 110 V/60 Hz
Mains cord: 2 pin

b) Lycopodium slide

Lycopodium powder sandwiched between glass plates with a stand

c) Lycopodium screen

Acrylic semi transparent screen graduated in cm

d) Measuring Tape
Length: 3 m