The term plasma It has its origin in Latin but its more remote antecedents are in the Greek language. It is a word that means "training" . For the biology , plasma is the liquid part of blood fluids or lymph where it is possible to find components in suspension . It's also about lymph or blood that lacks cells.
He blood plasma , therefore, is the liquid and acellular compound of blood. In it you can find water in 90% and numerous substances that are dissolved in it, among which proteins, lipids, carbohydrates and various metabolic wastes appear.
In a similar sense, it can be said that the so-called seminal plasma It is the fraction of semen (the viscous fluid that ejects the penis into ejaculation) that is in a liquid state.
In the field of physical Plasma means gaseous material that is intensely ionized and exhibits the same amount of free charges both positive and negative. It's about the state of the matter that abounds most on our planet.
It is worth mentioning that this matter has multiple uses and applications. The plasma screens They are used by some large televisions. These televisions are made up of many cells that are placed between two glass panels and that house a mixture of gases such as neon and xenon.
Plasma screens have the main disadvantage of what is known as the phantom effect, which occurs when a image Static (like a channel logo) has a long exposure and marks the screen. This is generated since the phosphorescent compounds that emit the light lose their luminosity with use.
Rivalry between plasma and LCD TVs
The acronym LCD means LCD and the televisions that use this technology are formed by several layers: two that filter the polarization, which are found in Contact with the outside of the device, and two glass and electrodes, among which is the liquid crystal. Without entering into very technical characteristics and extensive definitions, it is immediately perceived that said composition differs greatly from that of its rival, plasma.
Especially when both technologies were the only options to jump to modernity, more or less in the late 90s, consumers tried to know which was the best, forgetting that the same proposal can be suitable for some and inconvenient for others. By those times, the LCD used to surpass the plasma in resolution, since it easily reached the 1920 x 1080 pixels 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, being today measured by millions. However, even today the manufacturers of liquid crystal displays have problems to show the color black (or rather the absence of color), although some models present intelligent solutions to this problem, already aged.
Another of the differences that still exist and that is convenient to take into account when deciding on one or the other technology is robustness and fragility of each type of television; In this battle, the LCD is the undisputed winner, since it presents a more compact, lightweight and less delicate structure, which facilitates its transfer and handling.
Finally, the general perception is that a plasma screen offers warmer colors and is more suitable for watching movies and low video resolution It should be scaled, while the liquid crystal offers better results for high definition content that requires a lot of sharpness.