According to the chemical encyclopedia of Chemeurope.com, aviation gasoline â or avgas for short â is a fuel used in piston-engine and Wankel engine aircraft. It is different from standard gas because it uses tetra-ethyl lead, or TEL, to enhance combustion.
This is a list of symbols found within all branches of mathematics to express a formula or to represent a constant. When reading the list, it is important to recognize that a mathematical concept is independent of the symbol chosen to represent it.
What is Pie in Math. Pie in math does not actually have a letter âeâ in the word. It is only referred to as Pi and has the. In its etymological meaning, Pi is actually a Greek letter, which is basically used as representation of the number to calculate and measure the circumference of a circle.