Plasma medicine Plasma medicine Plasma medicine is an emerging field that combines plasma physics, life sciences and clinical medicine. It is being studied in disinfection, healing, and cancer. Most of the research is in vitro and in animal models. It uses ionized gas (physical plasma) for medical uses or dental applications . Plasma, often called the fourth state of matter, is an ionized gas containing positive ions and negative ions or electrons, but is approximately charge neutral on the whole. The plasma sources used for plasma medicine are generally low temperature plasmas, and they generate ions, chemically reactive atoms and molecules, and
Negative number and gave rules regarding operations involving negative numbers and zero, such as ""A debt cut off from nothingness becomes a credit; a credit cut off from nothingness becomes a debt. "" He called positive numbers "fortunes," zero "a cipher," and negative numbers "debts." In the 9th century, Islamic mathematicians were familiar with negative numbers from the works of Indian mathematicians, but the recognition and use of negative numbers during this period remained timid. Al-Khwarizmi in his "Al-jabr wa'l-muqabala" (from which we get the word "algebra") did not use negative numbers or negative coefficients. But within fifty years, Abu Kamil illustrated