Exploring the miniature world
Issue 132: October 2006.
Image right: the Wild M21 polarising microscope; one of the six petrographic microscopes discussed by Greg McHone. Robert Pavlis also shares an LED lighting project for this model.
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The best 'affordable' petrographic microscopes of the 1970s to 1980s - Gregory McHone (USA) discusses and illustrates six of his favourite polarising microscopes based on his extensive background in working with such scopes.
Making selected diatom slides - Raymond Hummelink (Netherlands) describes and illustrates practical techniques and simple equipment for the enthusiast to make their own arranged slides.
Sigmund Freud’s microscope – on the 150th birthday anniversary of the histologist - Manuel del Cerro (Canada) and Lazaros C. Triarhou (Greece) 'briefly review Freud’s work as a microscopist and give details of the microscope type he used for most of his work'.
Joseph Leidy and 'Fresh-water Rhizopods of North America' - Steve Neeley (USA) shares his enthusiasm for this classic illustrated work by this famous scientist, with links to the external online 'portal' he has created to celebrate the works of Leidy which includes downloadable scans of the entire book.
Eyes on the Zigview R digital viewfinder - Mark Spear (USA) discusses the pros and cons of using this digital viewfinder on a DSLR as an aid for macro and photomicroscopy compared with Nikon's right angle optical viewfinder.
e-Bah! Some virtues and vicissitudes of Internet auctions or confessions of an easy mark - Richard Howey (USA) presents an essay on the pros and cons of using this popular online auction site.
A close-up view of the 'wild cucumber' - Brian Johnston (Canada) explores the macroscopic and microscopic potential of this flowering plant.
Black-eyed Susan follow up - Richard Haynes (USA) discovers what the tiny organisms were on the flowers discussed in last month's article with readers' help.LOMO & Zeiss Jena pre-DIN objectives - Ian Walker (UK) shares some 'observations and comparisons between two classic ranges' of objectives, many of the former designs were based on the latter.
The Wild M21 polarising microscope and LEDs - Robert Pavlis (USA) describes and illustrates the retrofitting of a 'K2' LED into the illumination system and compares the results with tungsten lighting for polar work.Reducing lighting anomalies in low-medium power darkfield Illumination - Paul James (UK) illustrates how to improve darkfield with an Abbe condenser using a ground glass diffuser.
Further notes on the diatoms of Bitter Lake National Wildlife Refuge, Chaves County, New Mexico - David Richman (USA) shares an illustrated essay presenting a selection of diatom species found in this fascinating habitat.
A close-up view of a member of 'cucurbits' - Brian Johnston (Canada) explores the macroscopic and microscopic potential of a member of plant family which includes the pumpkins, squashes and gourds.