Laurent polarimeter, economical : POD068570

Principle :
The Laurent polarimeter is enabling a measurement of the polarization direction of a polarized light through an optical medium.
Actually, some isotropic transparent bodies, crossed by one rectilinear polarized monochromatic light beam, rotate the polarization plane aroud the beam propagation direction.

Characteristics:
2 graduated circles : 0-180°
2 glass tubes : 100 mm and 200 mm, Ø 15 mm
accuracy : 0.05°
dimensions : 200x360x450 mm
weight : 10 kg
Light source : Sodium spectral lamp (589 nm)
Power supply : 230 V – 50/60 Hz
the polarimeter is composed of of one input polarimeter, one lens fitted on graduated rule and one housing for observation tubes, length between 5 to 20 cm, inside which the substances to be analysed are introduced.
Delivered with two observation tubes : 10 & 20 cm, enabling to demonstrate that the rotation angle is proportionnal to the crossed thickness, for a given substance of concentration C.

Main Experiments:
• Active substance rotating polarization
• BIOT’s law
• Active substance mixturePolarisation rotatoire des substances actives