dGal(decigal)

A decigal (dGal) is a unit of acceleration used in the field of geophysics and geodesy. It is a non-SI (International System of Units) unit that is based on the Gal, a unit named after the Italian scientist Galileo Galilei.

A Gal (Galileo) is defined as 1 centimeter per second squared (cm/s²), while a decigal (dGal) is equal to one-tenth of a Gal, or 0.1 cm/s², or equivalently, 0.001 m/s² when expressed in terms of the SI units. The decigal is primarily used to express gravitational gradients and measurements of the Earth's gravity field, such as those in gravity surveying and gradiometry. These smaller units like dGal are suitable for accurately representing the subtle variations in the strength of Earth's gravitational field at different locations and depths.

µm/s²(micrometre per second squared)

The unit µm/s² (micrometre per second squared) is a derived unit of acceleration in the International System of Units (SI). It is used to express the rate of change of velocity with respect to time over a distance scale of micrometres.

One micrometre per second squared (1 µm/s²) represents an acceleration where an object's velocity changes by one micrometre per second (1 µm/s) every second. In other words, it signifies how quickly an object's velocity increases or decreases over time on a very small scale, in the order of micrometres (1 µm = 10^-6 meters).

This unit is typically used in fields such as microfluidics, micro-robotics, or any scientific research that involves the study of extremely small-scale motion and acceleration.