nonrelativistic

/ˌnɑnˌrɛlətɪˈvɪstɪk/
adjective
  1. Not based on or involving Einstein's theory of relativity; using the older, simpler physics of Newton, where speeds are much slower than the speed of light.
    • Most everyday engineering problems use nonrelativistic equations because objects move far slower than light.
    • In a nonrelativistic physics class, we calculated the speed of a car without worrying about time dilation.
    • The scientist explained that for a baseball thrown at 100 miles per hour, a nonrelativistic model is perfectly accurate.
Antonyms