once ivity developed a reputation for beingimpossible for an ordinary person to grasp. Matters  sout in imes decided to do a story, and—forreasons t can never fail to excite  t, oneo conduct terview.

    Crouc of  nearly everyting errors in  ion t Einstein o publis only t tion stuck anyway.

    Soon tivity ion—and tific establis, it must be said, did little to disturb th.

    asked tisronomer Sir Arton if it rue t and Einstein’s relativity ton considered deeply for a moment and replied: “I am trying to t, tivity  t it involved a lot of differentialequations, Lorentz transformations, and oted matics (t did—evenEinstein needed ), but t it  so tuitive.

    In essence ivity says is t space and time are not absolute, but relative to boto ter one moves ts become. e can never accelerate ourselves to t, and try (and faster orted ive to an outside observer.

    Almost at once popularizers of science tried to come up o make tsaccessible to a general audience. One of ttempts—commercially atleast—ivity by tician and prand Russell. Init, Russell employed an image t imes since. oenvision a train one  60 percent of t. tosomeone standing on a platform c pass, train o be only eig  too slos rain o be running at only four-fiftheir normal speed.

    rain ions. to train e normal. It form o do, you see, ion relative to t.

    t actually ime you move. Fly across ted States, and youep from tbely alter your oime and space. It ed t a baseball t a s o e. So ts of relativityare rea