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Hidden face

Hidden face is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Hidden face rather than just read about it. In short: People often see hidden faces in things. Depending on the circumstances, this is referred to as pareidolia, the perception or recognition of a specific pattern or form in something essentially different.

Hidden face — main illustration
Hidden face — illustration

Key takeaways

  • Hidden face belongs to physics; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Hidden face to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Hidden face from memory before moving on to harder problems.

Reference excerpt

People often see hidden faces in things. Depending on the circumstances, this is referred to as pareidolia, the perception or recognition of a specific pattern or form in something essentially different. It is thus also a kind of optical illusion. When an artist notices that two different things have a similar appearance, and draws or paints a picture making this similarity evident, they make images with double meanings. Many of these images are hidden faces or hidden skulls. These illusionistic pictures present the viewer with a mental choice of two interpretations: head or landscape, head or objects, head or architecture, etc. Both of them are valid, but the viewer sees only one of them, and very often they cannot see both interpretations simultaneously.

Chance images

There are everyday examples of hidden faces, they are "chance images" including faces in the clouds, figures of the Rorschach Test and the Man in the Moon. Leonardo da Vinci wrote about them in his notebook: "If you look at walls that are stained or made of different kinds of stones you can think you see in them certain picturesque views of mountains, rivers, rocks, trees, plains, broad valleys, and hills of different shapes. You can also find in them battles and rapidly moving figures, strange faces and costumes, as well as an infinite number of things." Francois and Jean Robert collected and published a lot of photos of "chance faces".

Hidden faces created by artists

The Mannerist master at the 16th-century imperial Habsburg courts of Vienna and Prague, Giuseppe Arcimboldo of Milan was probably the best known artist for creating extraordinary hidden faces. He arranged flowers, vegetables, fruits, shells, scallops and other animals, books and different things on the canvas in such a way that the whole collection of objects formed a portrait. His series of The Four Seasons seems to be the first use of this approach and technique. Arcimboldo's composite heads were celebrated and imitated by his contemporaries but they were relatively forgotten until participants in the twentieth-century art movements rediscovered them, bringing them to the attention of art historians. He is considered as forerunner of Dada and Surrealism. Some other famous Renaissance and Baroque artists created hidden faces:

Tobias Stimmer Hans Holbein the Younger Matthäus Merian Maria Sibylla Merian Marcus Gheeraerts the Elder Wenzel Hollar Josse de Momper Salvador Dalí was fascinated by the technique of Arcimboldo and his paranoia-critical method was influenced by the Mannerist painter. For Dalí the Arcimboldo effect was a form of self concealment as well as this exhibitionist painter seemed, all throughout his life of constant posturing, to hide his real self behind the gaudy externals of his behaviour. Larvatus prodeo, "I wear a mask," he could have said with Descartes and he used this quotation from the French philosopher for the epigraph of his novel Hidden Faces. Probably his most famous "hidden face" is Voltaire in his oil painting: "Slave Market with the Disappearing Bust of Voltaire". Other Surrealist painters rediscovered the technique of hidden faces in the first part of 20th century:

Max Ernst René Magritte Istvan Orosz tries to combine the technique of anamorphosis with the hidden faces. Anamorphosis is used for those works of art that were made as distorted and unrecognizable through clever geometrical constructions. But when viewed from a certain point, or through a reflecting object placed upon it, the hidden image appears in its true shape, that is, it goes through retransformation. Orosz made experiments with anamorphoses not only in resurrecting the old technique but to improve and develop it. Instead of having a meaningless distorted image, his intent is to bring sense to the basic anamorphic picture, giving it meaning in itself with its second reading being revealed by viewing it from a different viewpoint such as looking at it through a special mirror. The ambiguous layers coming up by this approach make use of the connection or contrast of the two images within the same picture being independent from each other. There are many other contemporary works using hidden faces:

Shigeo Fukuda Octavio Ocampo Sandro del Prete

See also Anamorphosis Anthropomorphism Face perception Hide and Seek painting Rubin vase Utisz

Literature The pioneering study on the matter is an academic dissertation, unpublished to this day: Anita Joplin, The Anthropomorphic Landscape: A Study in 16th Century Imagery (unpublished thesis, Reed College), 1974.

On anthropomorphic landscapes Fernand Hallyn, "Le paysage anthropomorphe", Yves Giraud (ed.), Le Paysage à la Renaissance, Fribourg: Editions universitaires de Fribourg, 1988, pp. 43 ss. Michel Weemans & Jean-Hubert Martin (eds.), Le paysage anthropomorphe à la Renaissance (international conference proceedings, 2009), Paris: Réunion des musées nationaux, (awatiting publication). Michel Weemans, "Herri met de Bles’s sleeping peddler: an exegetical and anthropomorphic landscape", The Art Bulletin, Vol. 88, Iss. 3, pp. 459–481. Andreas Hauser, « Andrea Mantegnas ‘Wolkenreiter’: Manifestationen von kunstloser Natur oder Ursprung von vexierbildhafter Kunst ? », Gerhart von Graevenitz, Stefan Rieger, Felix Thürlemann (eds.), Die Unvermeidlichkeit der Bilder, Tübingen, 2001, pp. 147-172. Omar Calabrese (2006): Artists' Self-Portraits, ISBN 978-0-7892-0894-1 (The book has a chapter on artists who hide self-portraits in their pictures: e.g. Leonardo da Vinci, Michelangelo, Rembrandt, van Gogh, Munch, Dalí, Albrecht Dürer, Velàzquez, Elisabeth Vigée-Lebrun, Ingres, Degas, Toulouse-Lautrec, Gainsborough, Matisse, James Ensor, Egon Schiele, Frida Kahlo, Man Ray, Henry Moore, Robert Rauschenberg, Norman Rockwell, and Roy Lichtenstein.)

… excerpt ends here. Continue reading the full article.

Illustrations

Hidden face: "The Organ Player" - Pareidolia phenomenon in Neptune's Grotto, Sardinia
"The Organ Player" - Pareidolia phenomenon in Neptune's Grotto, Sardinia
Hidden face illustration
Hidden face illustration
Hidden face illustration
Hidden face illustration

Worked examples

Example 1 — a first encounter with Hidden face

Start with the simplest possible case. Write down what Hidden face claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Hidden face before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Hidden face ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Hidden face

In research
Hidden face appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Hidden face in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Hidden face is common in secondary-school and first-year university syllabi. It links to neighbouring topics Artistic techniques, Optical illusions, Optical phenomena, so understanding it makes those chapters shorter.
In everyday life
Look for Hidden face outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Hidden face in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Hidden face means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Hidden face out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Hidden face in simple terms?

People often see hidden faces in things. Depending on the circumstances, this is referred to as pareidolia, the perception or recognition of a specific pattern or form in something essentially different.

Why does Hidden face matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Hidden face?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Hidden face.

Tags

  • Artistic techniques
  • Optical illusions
  • Optical phenomena
  • Pareidolia

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