A foundational concept in classical mechanics stating that an observer moving at a constant velocity will measure the same physical laws as a stationary observer. It means there is no absolute state of rest. In engineering analysis, it allows dynamicists to simplify calculations by shifting the reference frame to match a moving component, like a train carriage or a steady fluid flow.
Heard on the job
We can treat the conveyor belt as a stationary frame to calculate the part's drop trajectory, thanks to Galilean invariance.
Also heard as
- Newtonian relativity