Abstract:
The basic work was to determine the refractive index of glucose and Arabic
gum blended by using a polarimeter and laser light source in conjunction with a
photocell and a laser power meter.
The results obtained have shown that the value of the specific rotation angle β
= 0.44 at zero concentration. It is value was found to increase slowly to 44.65 at the
higher concentration of 50W%. Above this limit the value of β remains unchanged.
This behavior has been reflected on the measured refractive indices. The value of Δn
for prepared sample was 1.56 at 20% concentration and 1.568 for 50W%. This value
remain constant for the concentration ranging between 50W% and 100W%.
It is concluded that, the glucose and gum Arabic solution permits the
tuneability of laser at concentration less than 50W% and at higher concentration the
polarization is ineffective to produce a noticeable changes in refractive index Δn.
