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chemistry

Theodore Rigg

Theodore Rigg is a chemistry 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 Theodore Rigg rather than just read about it. In short: Sir Theodore Rigg (6 April 1888 – 22 October 1972) was a New Zealand agricultural chemist and scientific administrator. Biography Rigg was born in Settle, Yorkshire, on 6 April 1888, the son of John Rigg, a merchant and a staunch Quaker, and Hannah (née Wilson).

Theodore Rigg — main illustration
Theodore Rigg — illustration

Key takeaways

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

Reference excerpt

Sir Theodore Rigg (6 April 1888 – 22 October 1972) was a New Zealand agricultural chemist and scientific administrator.

Biography Rigg was born in Settle, Yorkshire, on 6 April 1888, the son of John Rigg, a merchant and a staunch Quaker, and Hannah (née Wilson). On 20 February 1890, he and his family emigrated from England, sailing from London on the SS Doric and settling in New Zealand in the Wellington suburb of Newtown. Rigg was educated at Newtown School and Wellington College. He entered Victoria College, where he was a chemistry student under Professor Thomas Easterfield; he graduated MSc with first-class honours in 1911. Next, an 1851 Research Fellowship gained Rigg a place at St John's College, Cambridge, where he was awarded a BA in agricultural research in 1914. Rigg had followed his father into the Quakers and so, when war began, he looked for humanitarian work and joined a relief organisation of the Society of Friends. He distributed food and money to the needy in France, Albania, Montenegro and Russia, and was able to use his organisational and agricultural skills to assist in the farming recovery and the relief of refugees. While serving in Samara, Russia in 1917, he met Esther Mary White, a former teacher from Philadelphia; they eventually worked together until they left Russia in 1919. In 1920, back in New Zealand, Rigg joined the foundation staff of the Cawthron Institute, Nelson, under the directorship of his former mentor, Easterfield. He became a leading figure in all aspects of agricultural research. He was appointed head of the Department of Agriculture and Chemistry in 1924, assistant director in 1928 and director of the Institute in 1933, on the retirement of Easterfield. During his career Theodore Rigg gained many honours and distinctions, including fellowships of the Royal Institute of Chemistry (1925), the New Zealand Institute (1932), and the Royal New Zealand Institute of Horticulture (1947); and honorary doctorates of science from the University of Western Australia (1947) and the University of New Zealand (1957). He was appointed a Knight Commander of the Order of the British Empire in the 1938 New Year Honours. In 1953, he was awarded the Queen Elizabeth II Coronation Medal.

Family Theodore Rigg married Esther Mary White in Philadelphia on 8 October 1919. They had two daughters: Esther Mary in 1922 and Helen Hannah in 1929. Rigg’s first wife died on 15 October 1959. He married Kathleen Maisey Curtis on 2 December 1966. She was a retired mycologist, formerly at the Cawthron Institute, and elected first female Fellow of the Royal Society of New Zealand in 1936. Kathleen died on 5 September 1994 in Nelson, aged 102. Theodore Rigg died on 22 October 1972. His ashes are interred at Marsden Valley Cemetery, alongside those of his two wives.

References

Further reading Hughes, Helen R. (2005). A Quaker scientist : the life of Theodore Rigg KBE. New Zealand Yearly Meeting of the Society of Friends. Rotorua [N.Z.]: Published for New Zealand Yearly Meeting of the Society of Friends by Beechtree Press. ISBN 0473107430. OCLC 68815571.

Illustrations

Theodore Rigg illustration

Worked examples

Example 1 — a first encounter with Theodore Rigg

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

In research
Theodore Rigg appears in chemistry 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 Theodore Rigg 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
Theodore Rigg is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1888 births, 1972 deaths, 20th-century New Zealand public servants, so understanding it makes those chapters shorter.
In everyday life
Look for Theodore Rigg 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 Theodore Rigg in 20 minutes

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

Frequently asked questions

What is Theodore Rigg in simple terms?

Sir Theodore Rigg (6 April 1888 – 22 October 1972) was a New Zealand agricultural chemist and scientific administrator. Biography Rigg was born in Settle, Yorkshire, on 6 April 1888, the son of John Rigg, a merchant and a staunch Quaker, and Hannah (née Wilson).

Why does Theodore Rigg matter?

Because it connects several chemistry 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 Theodore Rigg?

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 Theodore Rigg.

Tags

  • 1888 births
  • 1972 deaths
  • 20th-century New Zealand public servants
  • Alumni of St John's College, Cambridge
  • British emigrants to New Zealand
  • Burials at Marsden Valley Cemetery
  • Fellows of the Royal Institute of Chemistry
  • Fellows of the Royal Society of New Zealand
  • New Zealand Knights Commander of the Order of the British Empire
  • New Zealand chemists
  • People associated with the Cawthron Institute
  • People from Settle, North Yorkshire

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