Standard form close standard formA number between 1 and 10 multiplied by a power of ten, eg 193 in standard form is written as 1·93 × 10², 0·193 in standard form is written as 1·93 ×10⁻¹. It is used ...

Real and imaginary: The time-dependent Schrödinger equation formulated using complex numbers. (Courtesy: iStock/piranka) Complex numbers are essential to achieve the most accurate quantum-mechanical ...