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Thor Heyerdahl

Thor Heyerdahl is a science 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 Thor Heyerdahl rather than just read about it. In short: Thor Heyerdahl KStJ (Norwegian pronunciation: [tuːr ˈhæ̀ɪəɖɑːɫ]; 6 October 1914 – 18 April 2002) was a Norwegian adventurer and ethnographer with a background in biology with specialization in zoology, botany and geography. Heyerdahl is notable for his Kon-Tiki expedition in 1947, in which he drifted 8,000 km (5,000 mi) across the Pacific Ocean in a primitive hand-built raft from South America to the Tuamotu Islands.

Thor Heyerdahl — main illustration
Thor Heyerdahl — illustration

Key takeaways

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

Reference excerpt

Thor Heyerdahl KStJ (Norwegian pronunciation: [tuːr ˈhæ̀ɪəɖɑːɫ]; 6 October 1914 – 18 April 2002) was a Norwegian adventurer and ethnographer with a background in biology with specialization in zoology, botany and geography. Heyerdahl is notable for his Kon-Tiki expedition in 1947, in which he drifted 8,000 km (5,000 mi) across the Pacific Ocean in a primitive hand-built raft from South America to the Tuamotu Islands. The expedition was supposed to demonstrate that the legendary sun-worshiping red-haired, bearded, and white-skinned "Tiki people" from South America drifted and colonized Polynesia first, before actual Polynesian peoples. His hyperdiffusionist ideas on ancient cultures had been widely rejected by the scientific community, even before the expedition. Heyerdahl made other voyages to demonstrate the possibility of contact between widely separated ancient peoples, notably the Ra II expedition of 1970, when he sailed from the west coast of Africa to Barbados in a papyrus reed boat. He was appointed a government scholar in 1984 by the Norwegian government. He died on 18 April 2002 in Colla Micheri, Italy, while visiting close family members. The Norwegian government gave him a state funeral in Oslo Cathedral on 26 April 2002. In May 2011, the Thor Heyerdahl Archives were added to UNESCO's Memory of the World Register. At the time, this list included 238 collections from all over the world. The Heyerdahl Archives span the years 1937 to 2002 and include his photographic collection, diaries, private letters, expedition plans, articles, newspaper clippings, and original book and article manuscripts. The Heyerdahl Archives are administered by the Kon-Tiki Museum and the National Library of Norway in Oslo.

Youth and personal life Heyerdahl was born in Larvik, Norway, the son of master brewer Thor Heyerdahl (1869–1957) and his wife, Alison Lyng (1873–1965). As a young child, Heyerdahl showed a strong interest in zoology, inspired by his mother, who had a strong interest in Charles Darwin's theory of evolution. He created a small museum in his childhood home, with a common adder (Vipera berus) as the main attraction. He studied zoology and geography at the faculty of biological science at the University of Oslo. At the same time, he privately studied Polynesian culture and history, consulting what was then the world's largest private collection of books and papers on Polynesia, owned by Bjarne Kroepelien, a wealthy wine merchant in Oslo. (This collection was later purchased by the University of Oslo Library from Kroepelien's heirs and was attached to the Kon-Tiki Museum research department.) After seven terms and consultations with experts in Berlin, a project was developed and sponsored by Heyerdahl's zoology professors, Kristine Bonnevie and Hjalmar Broch. He was to visit some isolated Pacific island groups and study how the local animals had found their way there. On the day before they sailed together to the Marquesas Islands in 1936, Heyerdahl married Liv Coucheron-Torp (1916–1969), whom he had met at the University of Oslo, and who had studied economics there. He was 22 years old and she was 20 years old. Eventually, the couple had two sons: Thor Jr. (1938–2024) and Bjørn (1940–2021). The marriage ended in divorce shortly before the 1947 Kon-Tiki expedition, which Liv had helped to organize. After the occupation of Norway by Nazi Germany, he served with the Free Norwegian Forces from 1944, in the far north province of Finnmark. In 1949, Heyerdahl married Yvonne Dedekam-Simonsen (1924–2006). They had three daughters: Annette, Marian, and Helene Elisabeth. They were divorced in 1979. Heyerdahl blamed their separation on his being away from home and differences in their ideas for bringing up children. In his autobiography, he concluded that he should take the entire blame for their separation. In 1991, Heyerdahl married Jacqueline Beer (born 1932) as his third wife. They lived in Tenerife, Canary Islands, and were very actively involved with archaeological projects, especially in Túcume, Peru, and Azov until his death in 2002. He had still been hoping to undertake an archaeological project in Samoa before he died.

Fatu Hiva

… excerpt ends here. Continue reading the full article.

Illustrations

Thor Heyerdahl illustration
Thor Heyerdahl: The Kon-Tiki in the Kon-Tiki Museum in Oslo, Norway
The Kon-Tiki in the Kon-Tiki Museum in Oslo, Norway
Thor Heyerdahl: Thor Heyerdahl, in 1955
Thor Heyerdahl, in 1955
Thor Heyerdahl: Main migration routes of the Austronesian Expansion (c. 3000 to 1500 BCE) based on archaeological, linguistic, and genetic studies, as opposed to Heyerdahl's eastern origin hypothesis
Main migration routes of the Austronesian Expansion (c. 3000 to 1500 BCE) based on archaeological, linguistic, and genetic studies, as opposed to Heyerdahl's eastern origin hypothesis
Thor Heyerdahl: The Hōkūleʻa, a performance-accurate replica of a Polynesian double-hulled wa'a kaulua voyaging canoe, sailed from Hawaiʻi to Tahiti against prevailing winds in 1976, partly to disprove Heyerdahl's drift hypothesis on his much more primitive and unsteerable Kon-Tiki balsa raft[3]
The Hōkūleʻa, a performance-accurate replica of a Polynesian double-hulled wa'a kaulua voyaging canoe, sailed from Hawaiʻi to Tahiti against prevailing winds in 1976, partly to disprove Heyerdahl's drift hypothesis on his much more primitive and unsteerable Kon-Tiki balsa raft[3]

Worked examples

Example 1 — a first encounter with Thor Heyerdahl

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

In research
Thor Heyerdahl appears in science 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 Thor Heyerdahl 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
Thor Heyerdahl is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1914 births, 2002 deaths, 20th-century Norwegian historians, so understanding it makes those chapters shorter.
In everyday life
Look for Thor Heyerdahl 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 Thor Heyerdahl in 20 minutes

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

Frequently asked questions

What is Thor Heyerdahl in simple terms?

Thor Heyerdahl KStJ (Norwegian pronunciation: [tuːr ˈhæ̀ɪəɖɑːɫ]; 6 October 1914 – 18 April 2002) was a Norwegian adventurer and ethnographer with a background in biology with specialization in zoology, botany and geography. Heyerdahl is notable for his Kon-Tiki expedition in 1947, in which he drift…

Why does Thor Heyerdahl matter?

Because it connects several science 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 Thor Heyerdahl?

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 Thor Heyerdahl.

Tags

  • 1914 births
  • 2002 deaths
  • 20th-century Norwegian historians
  • 20th-century Norwegian scientists
  • 20th-century Norwegian writers
  • Archaeologists of Easter Island
  • Deaths from brain cancer in Italy
  • Grand Crosses of the Order of the Sun of Peru
  • Grand Officers of the Order of Merit of the Italian Republic
  • Knights of the Order of St John
  • Members of the Norwegian Academy of Science and Letters
  • Norwegian Army personnel of World War II

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