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astronomy

Otto Demus

Otto Demus is a astronomy 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 Otto Demus rather than just read about it. In short: Otto Demus (born St. Pölten, Austria, 1902; died Vienna, 17 November 1990) was an Austrian art historian and Byzantinist.

Key takeaways

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

Reference excerpt

Otto Demus (born St. Pölten, Austria, 1902; died Vienna, 17 November 1990) was an Austrian art historian and Byzantinist. He is considered a member of the Vienna School of Art History. Between 1921 and 1928, Demus studied art history at the University of Vienna under Josef Strzygowski, receiving his Ph.D. summa cum laude. In the following years Demus travelled throughout Greece, photographing the mosaics of its Byzantine churches in color, a project that resulted in his first major publication, Byzantine mosaics in Greece (1931), written together with Ernst Diez. He also worked for Austria's historical preservation service, documenting and restoring the medieval monuments of Carinthia. In 1936 he returned to Vienna, and defended his habilitation the following year. With this necessary qualification, Demus began to lecture on the history at the University of Vienna. Following the Anschluss in 1938, Demus decided to leave Austria, now under Nazi control, and emigrated to Great Britain in 1939, where he found employment as a librarian at the Warburg Institute and as a lecturer at the Courtauld Institute of Art. Due to his Austrian background, in 1940 he was interned and sent to Canada for a brief period as a civilian internee, after which he returned to Britain. The main scholarly fruits of his British years were his highly influential essay on middle Byzantine mosaic programs, Byzantine mosaic decoration (1947), and his foundational study of the Mosaics of Norman Sicily (1949). In 1946 Demus returned to Austria, accepting a position as president of the newly organized Bundesdenkmalamt (Federal Monuments Office), a post he would occupy for nearly twenty years. He was a frequent fellow at Dumbarton Oaks in Washington, which allowed him time to continue his studies in Byzantine art. There he worked along with Kurt Weitzmann, Ernst Kitzinger, Hugo Buchthal and James H. Stubblebine. These researches resulted in a study of The church at San Marco in Venice: history, architecture, sculpture (1960). In 1963, Demus was appointed Professor of art history at the University of Vienna, which he and the manuscript specialist Otto Pächt turned into a "Mekka der Mittelalterkunstgeschichte" ("a mecca for medieval art history"). Demus's books from this period turned increasingly to western medieval art: Romanische Wandmalerei (Romanesque wall painting) (1968), a thoughtful study masquerading as a coffee-table book, and Byzantine art and the West (1970), the product of his Wrightsman Lectures at New York University. Late in life, already having turned 70, Demus embarked on the most ambitious scholarly project of his career, namely the restoration and documentation of the mosaics of St Mark's Basilica (San Marco) in Venice. Demus was an untiring participant in the project, ascending the scaffolding daily to inspect the mosaics first hand, and the result was his monumental The mosaics of San Marco in Venice (1984). Having now turned 80, Demus undertook one final project, the documentation of the late medieval art of Carinthia, where he had served in the monuments service in his youth. Demus drove to the sites and took the photos himself, producing in the end the 750-page Spätgotischen Altäre Kärntens (The late Gothic altars of Carinthia) (1991). Demus was the consummate Viennese art historian, trusting his eye and developing a massive visual repertoire through the painstaking first-hand inspection of monuments. This side of his activity was expressed in his major monographic studies. He was also, however, "the master of the short essay, which set him free from the demands of a 'serious' book." His highly intellectual and imaginative Byzantine mosaic decoration has been described as "one of the most important books on medieval art this century", and displays the imprint of the old master of Viennese art history, Alois Riegl.

Decorations and awards 1959: Austrian Cross of Honour for Science and Art, 1st class 1965: Grand Decoration of Honour for Services to the Republic of Austria (1985) 1969: Wilhelm Hartel Prize 1975: Austrian Decoration for Science and Art

References

Literature H. Belting, "Otto Demus, 1902–1990" Dumbarton Oaks Papers 45 (1991), vii-xi.

External links Otto Demus at the Dictionary of Art Historians

Worked examples

Example 1 — a first encounter with Otto Demus

Start with the simplest possible case. Write down what Otto Demus claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, 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 Otto Demus 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 Otto Demus 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 Otto Demus

In research
Otto Demus appears in astronomy 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 Otto Demus 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
Otto Demus is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1902 births, 1990 deaths, 20th-century Austrian historians, so understanding it makes those chapters shorter.
In everyday life
Look for Otto Demus 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 Otto Demus in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Otto Demus 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 Otto Demus out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Otto Demus in simple terms?

Otto Demus (born St. Pölten, Austria, 1902; died Vienna, 17 November 1990) was an Austrian art historian and Byzantinist.

Why does Otto Demus matter?

Because it connects several astronomy 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 Otto Demus?

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 Otto Demus.

Tags

  • 1902 births
  • 1990 deaths
  • 20th-century Austrian historians
  • Academic staff of the University of Vienna
  • Academics of the Courtauld Institute of Art
  • Academics of the University of Cambridge
  • Austrian art historians
  • Austrian emigrants to the United Kingdom
  • Corresponding fellows of the British Academy
  • Historians of Byzantine art
  • People from Sankt Pölten
  • Recipients of the Austrian Decoration for Science and Art

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