chronoscope n.

I shouldn’t have told the police about my chronoscope. But I put the apparatus in, and I think I got it in right, and John, it makes the near-future images better, but what do you think—it cuts out some of the long-range tracks.

Mere probability is all that is left. And my first actual invention was a geodesic tracer, designed for its analysis. It was a semi-mathematical instrument, essentially a refinement of the old harmonic analyzer. Tracing the possible world-lines of material particles through Time, it opened a window to futurity…Here is the chronoscope…The latest development of the instrument. Scansion depends upon a special curved field, through which a sub-etheric radiation is bent into the time-axis, projected forward, and reflected from electronic fields back to the instrument. A stereoscopic image is obtained within the crystal screen, through selective fluorescence to the beat frequencies of the interfering carrier waves projected at right angles from below.

Wanted: a chronoscope. Such a time viewer would be darned handy in many ways, but at the moment—and this moment in which I am writing is so long gone as to be difficult to recall from its point of history by the time this is read—one would be useful in devising this page.

Chronoscope.

You must realize, Dr. Potterley, that chronoscopy, or time-viewing, if you prefer, is a difficult process…And there is a long waiting line for the chronoscope and an even longer waiting line for the use of Multivac which guides us in our use of the controls.

The editorial chronoscope, whereby we precog the future, developed a fault, somehow, when we were making up the July issue.

If the chronoscope (as I named it) fell into the wrong hands, the consequences did not bear contemplation.

‘It’s a chronoscope, Grandfather. A time-viewer!’ ‘How’s that again??’ ‘This artifact of my lost homeworld allows a viewer to look backwards and forwards through time.’