Water Fleas, Sand and more: Polarized light microscopy with a stereo microscope

[@sebastiancarpio4536]

Cool

[@-VK2NP]

@oliver you could use a small mirror front silvered like a telescope uses would eliminate double images

[@MarieChardome]

thank you for this lesson. re crystals: when you redisolved the vitamin c, you got another type of crystal (looking different than the original)? is there something like a 'secundary' crystal type for one same element, which could also be used for ID?