oldbookillustrations:

The ghost effect.
From Popular scientific recreations, by Gaston Tissandier, London, 1883.
(Source: archive.org.)

We can agree that a ghost is nonetheless the source of the projection.

oldbookillustrations:

The ghost effect.

From Popular scientific recreations, by Gaston Tissandier, London, 1883.

(Source: archive.org.)

We can agree that a ghost is nonetheless the source of the projection.