Except measure the refraction index of the liquid,it also can look into electrophoresis of light lines refraction,echo and total reflection from any direction by different medium.

Flume:Made of transarence organic glass.Dia:160mm

Dial:Made of white organic glass.Dia:160mm

Lamp-house:Semiconductor laser linearis lamp-house.

Wave lengh 650mm.

Outline border of the lamp-house:A whole shape made of platic have spire swith,fixup on circumrotate iron sheet by magnet can 3600 round and orientation along the lamp-house.

Base:Made of organic glass,have four volution by hand.