- What is an exhibition?
- Oral presentation
- Written exposition
- Scientific exposition
- Exposure in photography
We explain what an exhibition is and what an oral, written or scientific exhibition is like. Also, what is exposure in photography.
What is an exhibition?
When we talk about exhibiting, exposing oneself or making an exhibition, we are referring to issues that have a common meaning, which has to do with showing or teaching something to others. This sense is already found in the very origin of the word exhibition, which dates from Latin expositionis (from the verb I will expose), composed of the voices former- ("Outward") and i will put ("Place" or "place"), that is, that which is taken out, which is put outside.
The origin of this word goes back to the habits of Ancient Rome, where it was customary to throw out children whose paternity was mistrusted, or who were born into families with so few resources that it was impossible to support them.
This action was known as an exhibition, and for centuries there were reminiscences of it in Western culture, to the point that in more recent times, orphaned or abandoned children were automatically assigned the surname foundling, that is, exposed.
Nowadays, such practices are frowned upon, and the word has acquired less cruel meanings, linked however to what is removed, placed on the outside or displayed for others to contemplate, learn or recognize it.
Thus, for example, exhibitions of historical, scientific or artistic material in museums are known precisely as exhibitions, since the pieces are taken from their deposits so that the public can see them, admire them and learn about them.
It is also common to say that one has "been exposed" in their intentions, their way of being or some feature of their personality or their emotions that is normally hidden, concealed or not in good taste to display. Then, exposing someone can be equivalent to betraying him, accusing him, showing him to others so that they know something about him that, otherwise, would have remained secret.
Oral presentation
Another very common sense of the verb expose has to do with presentations, conferences or oral presentations in general. In them, one or more spokespersons or specialists in a subject speak on an important topic so that the public is instructed in the matter, to clarify doubts or present a problem whose resolution deserves the knowledge of all.
These types of presentations are known as exhibitions and they are very frequent in the political and academic sphere. In the latter, they are used as a mechanism of evaluation (even to approve the research important: what we commonly call "defense" of a thesis) and / or student participation in class dynamics.
An oral presentation generally consists, then, of a person speaking on a topic for a listening public, always with the intention of informing, teaching or sharing the knowledge. At the end of the exhibition, it is common for the public to give their opinion, ask questions or comments and give the exhibitor a return.
Written exposition
In the event that the presentation of a topic (as explained in the previous case) is not made by a person who speaks, but through a text or a set of written texts, it is possible to speak of a written exposition.
The essays, reflections, letters of intent, monographs and other similar documents are written expositions, in which the author records his ideas or their reflections on a topic so that later a reader or a group of them can review and understand them.
Scientific exposition
For its part, a scientific exhibition, as its name indicates, is dedicated to topics of scientific-technological interest. It can be an oral or written presentation, by way of presentation, or a museum or fair-type exhibition (traveling), in which those present are instructed in scientific matters, especially in an informative way, that is, pointing to a broad and non-specialized audience.
Exposure in photography
At art Y technique of the Photography, the exposure has a very specific meaning: the amount of light that enters the interior of the camera (and that, therefore, has contact with the photosensitive material), measured according to the formula:
Exposure = illuminance x time
In case the exposure is very high, there will be a lot of light and you will run the risk of being overexposed, that is, that only white light is registered. Otherwise, if the exposure is very low, the photograph will tend to darken and information will be lost in blackened segments.
Exposure is key to a good photograph, and it can be managed through two variables of the camera:
- The aperture of the diaphragm, that is, how much the "eyelid" of the camera opens to let light pass through.
- The shutter speed, that is, how long the photosensitive material is exposed to incoming light.