Essay about Electron Microscope
History of the Microscope Essay
This all brass monocular microscope has a bent claw foot, a feature found in James Swift & Son instruments. The stage, attached to the base by trunnions, supports the tubular limb with an arm. The coarse focusing is by the draw-tube, and the fine focusing by the screw on top of the limb. A swinging mirror is attached to the tubular tailpiece. The small instrument was likely intended for use by students. No carrying case and accessories. About1880. Signed: Bryson, Edinburgh.
Essays on the microscope | Lens (Optics) | Microscope
Built to the popular Ross design, the microscope displays the typical Y-shaped foot, vertical pillars, boxy limb with a tubular tailpiece, the body-tube with a transverse arm that attaches to the limb. It comes with monocular as well as an interchangeable binocular body, with an adjustment mechanism by rackwork (with a single knob) in the front. It sits on a wooden platform. No case or accessories are included. About 1870. Signed: Baker. 244. High Holborn, London.
Resolution of an Electron Microscope - The Physics …
The dissecting microscope has a large brass stage with hand rests (covered with leather). It is mounted on a pair of straight legs and a curved foot in the back. The binocular body is attached to the limb by an arm, with the nosepiece extending downward. Also referred to as the Stephenson dissecting microscope (invented by John Ware Stephenson in 1872), the binocular instrument provides an erect image and makes dissection easier. It comes with a carrying case and accessories. About 1890. Signed: Swift & Son 81 Tottenham CTRD London. W.C.
Essays in Love - Alain de Botton
This is the firm's "Challenge" microscope, with a dark brass, claw foot. It differs from the Ross model microscopes Swift made earlier. Instead of the vertical pillars that supported the limb, the curved foot holds the limb on trunnions. The Wenham binocular body moves on the rack and pinion and has an ocular adjustment mechanism (with a single knob) on the back. It comes with a wooden carrying case and accessories. About 1880. Signed: Swift & Son 43, University Street. London. W.C.