ground-glass circle
1stained glass — stained glass, adj. glass that has been colored, enameled, painted, or stained, esp. by having pigments baked onto its surface or by having various metallic oxides fused into it, as used in church windows, decorative lampshades, etc. [1785 95] *… …
2British stained glass (1811-1918) — In early 19th century Britain, beginning with an armorial window created by Thomas Willement in 1811 12, there was a revival of the art and craft of stained glass window manufacture. This revival gained impetus until stained glass windows became… …
3pottery — /pot euh ree/, n., pl. potteries. 1. ceramic ware, esp. earthenware and stoneware. 2. the art or business of a potter; ceramics. 3. a place where earthen pots or vessels are made. [1475 85; POTTER1 + Y3] * * * I One of the oldest and most… …
4History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… …
5optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …
6View camera — The view camera is a type of camera first developed in the era of the DaguerreotypeStroebel, L. D. (1986). View Camera Technique , 5th ed., p. 212. Boston: Focal Press. ISBN 0 240 51711 3] and still in use today, though with many refinements. It… …
7Camera — For other uses, see Camera (disambiguation). Various cameras A camera is a device that records and stores images. These images may be still photographs or moving images such as videos or movies. The term camera comes from the camera obscura… …
8Royal Gold Cup — The Royal Gold Cup, 23.6 cm high, 17.8 cm across at its widest point; weight 1.935 kg, British Museum. Saint Agnes appears to her friends in a vision. The Royal Gold Cup or Saint Agnes Cup is a solid gold covered cup lavishly decorated with… …
9Blue Angels — For the 1960 television series, see The Blue Angels (TV series). Blue Angels United States Navy Flight Exhibition Team The Blue Angels F/A 18 Hornets fly in tight diamond formation maintaining 18 inch wing …
10Hyperfocal distance — In optics and photography, hyperfocal distance is a distance beyond which all objects can be brought into an acceptable focus. There are two commonly used definitions of hyperfocal distance , leading to values that differ only slightly:The first… …
