Opening can be linked to how those organs involved with phonation open and expand.
Openness is a notion linked to the verb open , which refers to making something stop being closed or covered; to reveal what is hidden; or to uncover something. The term, however, can also mention other things.
A fissure , a crack , a crack , or a hole can be called openings: "We'll have to make an opening in the wall to pass the pipes through," "The explosion left a huge opening in the ceiling," "Please get some." of cement so we can cover the opening .
Opening in phonetics
In phonetics , the opening is linked to how the organs responsible for phonation open and expand when allowing air to pass through. Depending on the sound you want to emit, the opening will be larger or smaller.
Those sounds that can be pronounced without the intervention of the speaking organs are made with a much larger opening; In the case of our language, it happens with the vowels, where the sound of the A is made with a higher opening than the rest of the vowels, opposite to that of the I.
This term is opposed to closure , which refers to the contraction of the speaking organs to allow air to pass through and produce a specific sound.
The idea of aperture is linked to the diameter of a lens.
Similarities and differences with the concept of openness
This term gives rise to many confusions as it is very similar to another: «. Below we will try to establish the differences between the two, in order to know in the future when to use each one because, despite what many claim, these two concepts are not interchangeable.
If we are guided by the definitions that both words receive in the dictionary of the Royal Spanish Academy , we can say that although both refer to the action of opening something, there are certain differences. Openness is more advisable to talk about that action itself, to refer to an attitude of tolerance towards a certain situation ( openness towards sexual diversity ), to the action of starting a business ( opening a store ) and also to talk of the moment in which, through a certain mechanism, a hole is opened ( diaphragm opening ).
Aperture, on the other hand, is more suitable to refer to a gap or gap that has already occurred and is permanent, such as a wide space in the middle of two mountains ( opening between mountains ) or a gap through which light or air passes. ( window opening ).
Aperture in photography
In photography there is the diaphragm aperture , which many interchangeably call aperture (considering that the concept comes from shutter ). However, the correct one is opening because we are talking about a hole that can be opened mechanically but is not always in that state. To better understand this we can clarify that in the case of a telescope, the hole through which it is observed is always open , which is why it is called an aperture. Unfortunately and despite this clear difference in the meanings of the terms, it is necessary to point out that in the world of photography the incorrect term is often used more frequently.
Given the great contradictions that these terms generate, it is normal to find, even in important dictionaries, that for optics , the aperture is the diameter of a lens, which establishes what the angle of a beam of light will be when focused on the image plane. , despite the fact that in this case we are also talking about openness.
Finally, it is also worth differentiating this term with overture , which refers to a piece of music that serves as an introduction to a lyrical composition, be it an opera, an oratorio or any other composition of this style.