Convert between units like meters, feet, inches, yards, kilometers and miles. The calculator below can be used to convert between length units:
In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture. Several types of mathematical description can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration. The term concentration can be applied to any kind of chemical mixture, but most frequently it refers to solutes and solvents in solutions.
Systems science. Systems science, systemology (greco. ÏÏÏÏÎ·Î¼Î± â systema, Î»ÏÎ³Î¿Ï â logos) or systems theory is an interdisciplinary field that studies the nature of systemsâfrom simple to complexâin nature, society, cognition, and science itself.