astronomy

Thomas Gordon Hartley

Thomas Gordon Hartley 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 Thomas Gordon Hartley rather than just read about it. In short: Thomas Gordon Hartley (9 January 1931 in Beaumont, Texas – 8 March 2016 in Canberra, Australia) was an American botanist. Biography In 1955 Hartley graduated in botany with the academic degree Bachelor of Science at the University of Wisconsin-Eau Claire.

Key takeaways

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

Reference excerpt

Thomas Gordon Hartley (9 January 1931 in Beaumont, Texas – 8 March 2016 in Canberra, Australia) was an American botanist.

Biography In 1955 Hartley graduated in botany with the academic degree Bachelor of Science at the University of Wisconsin-Eau Claire. In 1957 he received his Master of Science and in 1962 his Ph.D. degree at the University of Iowa. From 1961 to 1965 he led an expedition of the Commonwealth Scientific and Industrial Research Organisation to New Guinea for the study of phytochemicals. From 1965 to 1971 he was associative curator at the Arnold Arboretum of Harvard University in Cambridge, Massachusetts. In 1971, he became a senior research scientist at CSIRO Plant Industry, Canberra, Australia. Thomas Gordon Hartley became notable for his study on the family Rutaceae. He described several new plant taxa and genera from Papua New Guinea, New Caledonia, Australia, Peninsular Malaysia like Maclurodendron and Neoschmidia and wrote revisions on genera like Zanthoxylum and Acronychia. In 1989, he and Benjamin Clemens Stone made a major revision of the genera Melicope and Pelea when they largely synonymized the genus Pelea with the genus Melicope. In 1969, botanist Hermann Otto Sleumer named a genus of plants from New Guinea, Hartleya (from the family Stemonuraceae) in Hartley's honour.

Selected works 1966: A revision of the Malesian species of Zanthoxylum (Rutaceae) 1967: A revision of the genus Lunasia (Rutaceae) 1969: A revision of the genus Flindersia (Rutaceae) 1970: Additional notes on the Malesian species of Zanthoxylum (Rutaceae) 1974: A revision of the genus Acronychia (Rutaceae) 1975: Additional notes on the genus Flindersia (Rutaceae) 1975: A new species of Zanthoxylum (Rutaceae) from New Guinea 1977: A revision of the genus Acradenia (Rutaceae) 1977: A revision of the genus Bosistoa (Rutaceae) 1989: (with Benjamin Clemens Stone): Reduction of Pelea with new combinations in Melicope (Rutaceae). Taxon 38: 119–23 2001: Allertonia. On the taxonomy and biogeography of Euodia and Melicope (Rutaceae).

References

External links Short biography from the Nationaal Herbarium Nederland "Thomas Gordon Hartley". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens. Retrieved 26 March 2008.

Worked examples

Example 1 — a first encounter with Thomas Gordon Hartley

Start with the simplest possible case. Write down what Thomas Gordon Hartley 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 Thomas Gordon Hartley 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 Thomas Gordon Hartley 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 Thomas Gordon Hartley

In research: Thomas Gordon Hartley 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 Thomas Gordon Hartley 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: Thomas Gordon Hartley is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1931 births, 2016 deaths, American botanists, so understanding it makes those chapters shorter.
In everyday life: Look for Thomas Gordon Hartley 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 Thomas Gordon Hartley in 20 minutes

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

Frequently asked questions

What is Thomas Gordon Hartley in simple terms?

Thomas Gordon Hartley (9 January 1931 in Beaumont, Texas – 8 March 2016 in Canberra, Australia) was an American botanist. Biography In 1955 Hartley graduated in botany with the academic degree Bachelor of Science at the University of Wisconsin-Eau Claire.

Why does Thomas Gordon Hartley 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 Thomas Gordon Hartley?

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 Thomas Gordon Hartley.