Apertures

Colpi, sulci and pores are major features in the identification of classes of pollen. citation Pollen may be referred to as inaperturate (apertures absent) or aperturate (apertures present).

The Borg established a transwarp hub and thousands of exit apertures within it to make traveling across the galaxy at a moment’s notice more accessible.

The works in “Girl Group" share a language — swooping curves, unexpected apertures and slits, right angles, tunnels, cones, shieldlike expanses — but each has its own personality, creating a sort of universe of mythical creatures.

The main camera is Samsung's Galaxy phones uses a dual-aperture lens that automatically changes apertures to let in more light when it detects you're in a darker environment.

It has two cameras on its back instead of the switching one between two apertures.

A number of different sized detectors are available to suit particular situations, such as placing the probe in small apertures or confined spaces.

Apertures that are more circular are called pores.

Finally, flow restrictors—such as apertures placed in pipes between points where the water pressure is measured—are the analog of resistors.

For large apertures at typical portrait distances, the ratio is still close to 1:1.

Generally, the highest degree of "sharpness" is achieved at an aperture near the middle of a lens's range (for example, f/8 for a lens with available apertures of f/2.8 to f/16).

Herschel discovered that unfilled telescope apertures can be used to obtain high angular resolution, something which became the essential basis for interferometric imaging in astronomy (in particular Aperture Masking Interferometry and hypertelescopes ).

In September 1692, Sibbald found a blue whale that had stranded in the Firth of Forth —a male convert long—which had "black, horny plates" and "two large apertures approaching a pyramid in shape".

It is not - as is commonly thought - made in the conventional way that musical instruments are using specific tube shapes or apertures.

Maximum and minimum apertures further The specifications for a given lens typically include the maximum and minimum aperture sizes, for example, f /1.4– f /22.

Moreover, focusing the lens of a fast reflex camera when it is opened to wider apertures (such as in low light or while using low-speed film) is not easy.

Other shaped slits were used, including vertical and diagonal apertures.

Sometimes stops and diaphragms are called apertures, even when they are not the aperture stop of the system.

The approximation holds when the numerical aperture is small, but it turns out that for well-corrected optical systems such as camera lenses, a more detailed analysis shows that N is almost exactly equal to even at large numerical apertures.

The condition for the reproduction of a surface element in the place of a sharply reproduced point — the constant of the sine relationship must also be fulfilled with large apertures for several colors.

The pupil magnification can be estimated by looking into the front and rear of the lens and measuring the diameters of the apparent apertures, and computing the ratio of rear diameter to front diameter (Shipman 1977, 144).