Apertures

Some articles on apertures, aperture:

Aperture (botany)
... Apertures are very small spots on the walls of a pollen, where the wall is thinner and/or softer ... The apertures are the places where the pollen tube is able to break through the elsewhere very tough pollen wall ... The number and configuration of apertures are often very exactly defined for and characteristic for different groups of plants ...
Point-and-shoot Camera - Camera Types
... These cameras have focus-free lenses, with fixed apertures ... Because of the fixed apertures, models with flash have no way of controlling the exposure from the flash ... Advanced models use automatic focus and have variable apertures ...
Jane Frank - The Latter 1950s To Late 1960s - "Apertured", Multiple-canvas Paintings
... Later she began making irregular holes in the canvases ("apertures", as she called them the earliest example is "Winter Windows", 1966–1967 ... The apertures also suggest a view into some sort of psychological interior, as though the second canvas - seen only partially, through the hole in the forward canvas - were some half-c ... Frank worked out a method - unspecified - of stiffening the apertures' often jagged edges so that they held their shape and flatness ...
Aperture (computer Memory)
... In computing, an aperture is a portion of memory physical address space which is persistently associated with a particular peripheral device or a memory unit ... Apertures may reach external devices such as ROM or RAM chips, or internal memory on the CPU itself ... To resolve this, the memory logic will contain several aperture selectors, each containing a range selector and an interface to one of the memory ...
Digital Single-lens Reflex Camera - Features Commonly Seen in DSLR Designs - Depth-of-field Control
... The lenses typically used on DSLRs have a wider range of apertures available to them, ranging from as large as f/1.0 to about f/32 ... Lenses for digicams rarely have true available aperture sizes much larger than f/2.8 or much smaller than f/5.6 ... digicams' smaller sensors there are a limited number of apertures available that will produce an acceptably sharp image ...