September 7th is Van Leeuwenhoek day. Everyone is encouraged to sample some local freshwater aquatic microscopic life and to show the wonders of this fascinating world to others perhaps unfamiliar with it. This annual event was suggested by a fellow amateur microscopist Wim van Egmond (Netherlands) who lives close to the freshwater lake where Van…
Author: David Walker
Amateur microscopist. Co-founder of the microscopy hobbyist website www.microscopy-uk.org.uk established in 1995 and editor of its monthly e-zine Micscape.
Have a particular interest in single lens microscopy and own two commercial Leeuwenhoek replicas (80x and 100x biconvex lenses). Enjoy using them to repeat studies of subjects reported by Van Leeuwenhoek and comparing with images from a modern microscope.
Understanding single lens microscopy using the Foldscope, part I – lens mag and how to measure
Part 1 – Lens magnification and how to measure it (Image does not seem to embedding at the native scale and text overlapping image. Original here. As well as exploring the microscopic world with the Foldscope, it also allows studies of the principles of single lens microscopy. The stated magnification of the lens supplied is 140X….