The latter gives values of the constants a and b for different samples of iron and steel, some of which are shown in the following table :- K=a+bH For most samples of steel the straight-line law was found to hold approximately up to H=3; in the case of iron and of soft steel the approximation was less close.
Lower your body toward the floor, maintaining your body in a straight-line from head to heel.
His lips thinned to a straight line.
He paused only long enough to locate her, and then made a straight line for her.
There are other arrangements of bars giving straight-line motions, and these arrangements together with ths general properties of mechanisms of this kind are discussed in How to Draw a Straight Line by A.