Hind, H. Lloyd (Herbert Lloyd), Randles, W. Brough (William Brough) · London : G. Routledge & sons, ltd · leaf 145
91 NERNST LAMPS Incandescent Filament Lamps. — Ordinary filament lamps are not at all suitable for photomicrography, as the filament is so thin that it is practically impossible to obtain a sufficiently broad image of it to fill the field of the objective. They may sometimes be used, in ground- … Fig. 26 ZEISS’ MKRNST LAMP glass globes, for low-power work, but they are never very satisfactory, as their intensity is low. Nernst Lamps. — The Nernst lamp is a very convenient illuminant in certain of its forms. The usual 1-ampere type has a single straight filament broad enough to fill the…
Color photography · Photomicrography
Internet Archive · Wellcome Library · Public domain (published before 1931). Free to use for anything.
![An illustration from The Hunterian lectures on colour-vision and colour-blindness [electronic resource] : delivered before the Royal College of Surgeons of England on February 1st and 3rd, 1911 (1911)](https://img.insideoutlibrary.com/img/200/ia-b21287466-77-0.webp)
