Back Action in quantum mechanics is the phenomenon in which the act of measuring a property of a particle directly influences the state of the particle. In all scientific measurement, there exists a degree of error due to a variety of factors. This could include unaccounted-for variables, imperfect procedure execution, or imperfect measurement devices. In classical mechanics, it is assumed that the error of any experiment could theoretically be zero if all relevant aspects of the configuration are known and the measurement devices are perfect. However, quantum mechanical theory supports that the act of measuring a quantity, regardless of the degree of precision, carries inherent uncertainty as the measurement influences the quantity itself. This behavior is known as back action. This is due to the fact that quantum uncertainty carries minimum fluctuations as a probability. For example, even objects at absolute zero still carry ‘motion’ due to such fluctuations.