Rupert nodded, put down one of his glasses on an invisible table, adjusted an equally invisible control, and promptly vanished from sight.

Likewise, it makes those users equally invisible to you.

Here he was, he thought, an invisible prey for equally invisible hunters.

The thing now was to maneuver an equally invisible exit.

Clearly ill at ease, she moved a chair through an imperceptible fraction of an inch, and gave a picture an equally invisible adjustment.

All of the canals Data had been mapping, even an island wider than China and Europe put together, were equally invisible.

As such, they were no more palatable than Newton's old idea of absolute space, which was equally invisible and arbitrary.

Trapped inside an invisible box, he escaped to bounce or throw an equally invisible balloon.

Chimali would have been equally invisible to me, had he chosen to crouch somewhere in that mist.

And a similar hair, equally invisible to anyone but him, that he had put on the cover of his rutter was also untouched.