Quantity
Quantity or amount is a property that can exist as a multitude or magnitude, which illustrate discontinuity and continuity. Quantities can be compared in terms of "more", "less", or "equal", or by assigning a numerical value multiple of a unit of measurement.
The Art of War
Book by Sun TzuThe Art of War is an ancient Chinese military treatise dating from the late Spring and Autumn period. The work, which is attributed to the ancient Chinese military strategist Sun Tzu, is composed of 13 chapters.
Efficient energy use
Efficient energy use, or energy efficiency, is the process of reducing the amount of energy required to provide products and services. There are many technologies and methods available that are more energy efficient than conventional systems.