Potato starch in polarised light Science Video

Ref: starch-000-0226-01


Isolated Potato starch grains viewed with polarised light clearly showing growth rings and the characteric 'maltese cross' with its origin at the grain's hilum. The start of the clip shows starch grains before a polarising filter was introduced into the light path and the end after the filter was removed. The starch grains themselves have no colour when view by ordinary light.