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Related Experiment Video

Updated: Dec 3, 2025

Gain-compensation Methodology for a Sinusoidal Scan of a Galvanometer Mirror in Proportional-Integral-Differential Control Using Pre-emphasis Techniques

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Published on: April 4, 2017

A Slow Impossible Mirror Picture.

Roberto Casati¹, Achille C Varzi²

¹Institut Jean Nicod, CNRS EHESS, PSL University Paris, France.

|October 28, 2020

Summary

This summary is machine-generated.

A novel impossible picture presents an object and its mirror reflection, creating conflicting views. This "slow" impossible picture requires explicit reasoning to interpret the depicted reality.

Keywords:

hole impossible picture mirror image perceptual reasoning

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Area of Science:

Visual Perception
Cognitive Psychology
Art and Illusion

Background:

Impossible pictures, such as the Penrose triangle, are well-established visual paradoxes.
Existing impossible figures often rely on geometric impossibilities or ambiguous configurations.

Purpose of the Study:

To introduce and describe a new category of impossible picture.
To explore the cognitive processes involved in interpreting novel visual paradoxes.

Main Methods:

Presentation and detailed description of the novel impossible picture.
Analysis of the visual and cognitive mechanisms required for its interpretation.

Main Results:

The impossible picture combines an object with its mirror reflection, yielding contradictory simultaneous views.
Unlike familiar impossible pictures, this new type necessitates explicit reasoning about the represented reality.

Conclusions:

This novel impossible picture represents a "slow" illusion, demanding deliberate cognitive engagement.
It expands the taxonomy of impossible figures and highlights the role of explicit reasoning in visual interpretation.