attometer/square second Unit Converter

Definition of attometer/square second unit

An attometer per square second (am/s²) is an SI-derived acceleration unit equal to one attometer—10⁻¹⁸ metres—of velocity change per second. It represents an acceleration of 10⁻¹⁸ metres per second squared, an extraordinarily small quantity.

History of attometer/square second unit

The attometer is formed from the SI prefix atto-, meaning 10⁻¹⁸, combined with the metre, the SI base unit of length. The prefix was officially adopted in 1964 by the General Conference on Weights and Measures, joining a sequence of decimal prefixes created as measurement extended toward smaller scales. Writing acceleration as attometres per second squared applies ordinary SI rules to an exceptionally tiny length scale. The unit has no separate historical namesake; it is a modern, derived expression used when scientific notation alone is inconvenient.

Applications of attometer/square second unit

Because an attometre is far smaller than atomic dimensions, attometres per second squared are rarely used in routine engineering or laboratory reporting. They may appear as a scale-specific unit in theoretical physics, speculative quantum-gravity discussions, or educational comparisons of extremely weak accelerations. In practice, researchers generally use metres per second squared and express such values with powers of ten.

Complete list of attometer/square second unit conversion