Coalescence is the property that certain things have of coming together.
Coalescence is the property of things to merge or join together . Coalescing substances or materials are those that can join together into a single body.
For chemistry , coalescence - a term that has its origin in the Latin word coalescens - implies a process through which two phase domains of essentially identical composition come into contact and form a larger phase domain. The materials, in this way, establish an optimization of their surface to minimize energy expenditure.
An example of coalescence occurs by mixing water and oil and shaking the container. Soon we will see how the drops begin to merge until they form a single large drop that represents the final separation between both substances.
Coalescence in different areas
Coalescence also takes place when welding metals . By applying thermal energy ( heat ), fusion welding achieves coalescence through the melt , forming a unique system of crystals. The molten metal is in contact with the edges of the joining surfaces, which are partially molten.
On the other hand, in the field of medicine the use of the word that we are now analyzing is also used. Thus, we speak of coalescence to refer to the adhesion of two surfaces that are in contact. A clear example of this would be scars.
The idea of coalescence can be linked to the welding of metals.
The notion of speech therapy
All this without forgetting that, in the field of speech therapy , this same word is referred to. In its case, its use is resorted to to define what is the assimilation of two differentiated sounds that create, precisely through that “union” , a totally new sound.
Specifically, we can clarify even more and explain that this action is one of the phonological processes that are part of children's language and that they develop basically with the intention of simplifying speech. What's more, in that case coalescence is included as a process that refers to the formation of the syllable.
The phenomenon of coalescence can be observed in geography when a river coming from a mountain range reaches the bottom of a tectonic valley. This watercourse drags a significant amount of sediments that form waste cones and overlap one another. The action of precipitation and the various floods mean that, over time, the valley has intercalated deposits that generate cross stratification .
Coalescence theory
In addition to all the above, we would have to point out the existence of what has been called coalescence theory . This is a technique or mechanism that was devised with the clear objective of being able to carry out the study and analysis of genetic variation. To do this, it is based on the history of genetic variants in the past.
It must be emphasized that it has great value, since it has been considered to be the most important advance achieved in the last thirty years regarding what is known as population genetics.