surface pinhole
1Pinhole — A pinhole is a small hole in the surface or interior of a material. Pinhole can also mean:*Pinhole (band), a rock band from Liverpool, England, later to become The Dead 60s * Pinhole camera, a camera that uses a pinhole to form an image instead… …
2rust pinhole — The early stage of rust penetration of a panel; rust pinholes will often reveal larger rust damage once the surface rust bubbles have been ground away …
3optics — /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,… …
4photoreception — photoreceptive, adj. /foh toh ri sep sheuhn/, n. the physiological perception of light. [1905 10; PHOTO + RECEPTION] * * * Biological responses to stimulation by light, most often referring to the mechanism of vision. In one celled organisms such …
5List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have …
6Alhazen — For the Moon crater, see Alhazen (crater). For the asteroid, see 59239 Alhazen. Alhazen Alhazen (Ibn al Haytham) …
7Ibn al-Haytham — Infobox Muslim scholars | notability = Muslim scientist| era = Islamic Golden Age| color = #cef2e0 | | image caption = Ibn al Haytham drawing taken from a 1982 Iraqi 10 dinar note. | | name = Unicode|Abū ‘Alī al Ḥasan ibn al Ḥasan ibn al Haytham… …
8Camera — 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… …
9Photographic lens — A photographic lens (also known as objective lens or photographic objective) is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media… …
10New Worlds Mission — Starshade. The New Worlds Mission is a project planning to build a large occulter in space designed to block the light of nearby stars in order to observe their orbiting planets. The observations could be taken with an existing space telescope,… …
