Professional articles and essays about Light & Optics. Written by Manfred Eickhorst, previously published in international professional magazines and newspapers.
One of the difficulties in viewing the interior of a gemstone with amicroscope is caused by light rays reflected back from the stone’s facets. How to reduce theses difficulties is described in this article written by Peter Read.
Professional article by Manfred Eickhorst, published in "Mensch & Büro" 3/2004.
The eyes of elderly people need more light, but at the same time are dazzled more easily than younger eyes.
Lamps designed for adjustment to personal needs...