How to measure angle of rotation of sucrose

[barca12345]

Hi all!

Supposed I have my solution of sucrose, my light source, my polarizer.

I shine my light source on my polarizer and plane polarized light passes through my solution, how then do I measure the how much my solution has rotated my polarized light by?

And also, what kind of container should I place my solution in?

Thanks!

 

[DrDu]

You need two polarizers and a tube (material not important). Just fill in the sucrose solution into the tube whose ends you may close by glueing glass plates (not plastic, as it will probably act as a polarizer, too). Comparing with the empty tube, you will have to rotate the polarizers on both sides so as to get maximum (or minimum) intensity. Google "polarimeter".