Drawing onion cells in real-time!

I’ve been re-viewing all the permanent slides I’d made earlier, and experimenting with different viewing techniques. Recently we took out my first slide, an onion peel mount (https://microcosmos.foldscope.com/?p=197449), and tried Mr Manu’s “camera lucida” mode (https://microcosmos.foldscope.com/?p=16684). Using the simplest of materials we found on my table, we set up the Foldscope as seen in the…