Psychologische und physiologische Grundlagen der Kinematographie. Entstehung von Bewegungen aus aufeinanderfolgenden, verschiedenen Einzelbildern. Ein Bewegungseindruck setzt nicht den Ablauf einer echten Bewegung voraus. Erläuterung des stroboskopischen Effektes.

In a connected series of three films on the visual perception of movement, selected examples serve to illustrate that the movement seen ("visual") differs to a greater of lesser extent from the actual ("physical") movement, according to the particular circimstances, so that they cannot be simply identified with one another. The relevant natural laws are also mentioned. The second film of the series takes up the psychological bases of cinematography. Simple examples demonstrate how seen movement can be perceived from a series of motionless, but different individual pictures. An explanation is also given of the stroboscopic effect which can lead to an impression of movement totally at variance with the actual movement.