/* Program to show table of object length at various speeds,
   computed according to the Lorentz contraction. */

#include <stdio.h>
#include <math.h>

main () {
    float frac_c;
    printf("A one-metre long object contracts to:\n");

    for (frac_c=0.1; frac_c<0.95; frac_c+=0.1) {
        printf (
            "%f metre at %3.1f of the speed of light\n",
            sqrt(1 - frac_c * frac_c),
            frac_c
        );
    }
}