The liquid, acellular part of blood is called plasma.
Plasma is the liquid part of blood fluids or lymph where it is possible to find components in suspension . Used in the field of biology , the concept also refers to lymph or blood that lacks cells .
The term plasma has its origins in Latin but its most remote antecedents are found in the Greek language. It is a word that means “training” .
Types of plasma
Blood plasma , therefore, is the liquid and acellular compound of blood. In it you can find 90% water and numerous substances that are dissolved in it, among which appear proteins, lipids, carbohydrates and various metabolic wastes.
Platelet-rich plasma , for example, is used in certain treatments. Plasma therapy is used primarily in the field of aesthetics. Likewise, in recent years, plasma donation has been promoted to help with the recovery of those suffering from COVID-19 .
On the other hand, in a similar sense, it can be said that the so-called seminal plasma is the fraction of semen (the viscous fluid expelled by the penis during ejaculation) that is in a liquid state.
Plasma is a material used in television screens.
The notion in physics
In the field of physics , plasma is understood as gaseous material that is intensely ionized and that exhibits the same amount of free charges, both positive and negative. It is the state of matter that is most abundant on our planet.
That is why plasma, as a state of aggregation, is usually associated with an ionized gas . In fact, if the temperature of a gas is increased, the ionization of its atoms can be achieved (increasing or reducing the number of electrons for the formation of ions) and obtaining a plasma.
As we already indicated, the state of aggregation that appears most abundantly in the universe is plasma. The body of stars is even made up of plasma. This type of question is studied by astrophysics .
It is worth mentioning that this material has multiple uses and applications. Plasma screens are used in some large televisions. These televisions are made up of many cells that are located between two glass panels and that house a mixture of gases such as neon and xenon.
The main disadvantage of plasma screens is what is known as ghosting , which occurs when a static image (such as a channel logo) is exposed for a long time and marks the screen. This is generated since the phosphorescent compounds that emit light lose their luminosity with use.
Plasma is abundant in intergalactic space.
Rivalry between plasma and LCD televisions
The acronym LCD means liquid crystal display and televisions that use this technology are made up of several layers: two that filter the polarization, which are in contact with the outside of the device, and two of glass and electrodes, between which is the liquid crystal. Without going into very technical characteristics and extensive definitions, it is immediately perceived that this composition differs greatly from that of its rival, plasma.
Especially when both technologies were the only options to jump into modernity, more or less at the end of the 90s , consumers tried to know which was the best, forgetting that the same proposal may be suitable for some and inconvenient for others . At that time, LCD used to surpass plasma in resolution, since it easily reached the 1920 x 1080 pixels typical of high definition, while its competition offered a maximum of 1280 x 720.
There was also discussion about contrast , a field in which plasma technology was victorious, at a time when values did not exceed a few thousand, whereas today they are measured in millions. However, even today liquid crystal display manufacturers have problems displaying the color black (or rather the absence of color), although some models present intelligent solutions to this long-standing problem.
Another difference that continues to exist and that is convenient to take into account when deciding on one or another technology is the robustness and fragility of each type of television; In this battle, the LCD is the undisputed winner, since it has a more compact, lighter and less delicate structure, which makes it easier to transport and manipulate.
Finally, the general perception is that a plasma screen offers warmer colors and is better suited for watching movies and low- resolution video that needs to be upscaled, while liquid crystal offers better results for high-definition content that requires a lot of sharpness.