science

Lawrence Alexander Sidney Johnson

Lawrence Alexander Sidney Johnson 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 Lawrence Alexander Sidney Johnson rather than just read about it. In short: Lawrence Alexander Sidney Johnson (26 June 1925 – 1 August 1997) known as Lawrie Johnson, was an Australian taxonomic botanist. He worked at the Royal Botanic Gardens, Sydney, for the whole of his professional career, as a botanist (1948–1972), Director (1972–1985) and Honorary Research Associate (1986–1997).

Key takeaways

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

Reference excerpt

Lawrence Alexander Sidney Johnson (26 June 1925 – 1 August 1997) known as Lawrie Johnson, was an Australian taxonomic botanist. He worked at the Royal Botanic Gardens, Sydney, for the whole of his professional career, as a botanist (1948–1972), Director (1972–1985) and Honorary Research Associate (1986–1997). The standard author abbreviation L.A.S.Johnson is used to indicate this person as the author when citing a botanical name. Alone or in collaboration with colleagues, he distinguished and described four new families of vascular plants, 33 new genera, 286 new species (including posthumous publications), and reclassified another 395 species. Of the families he described, Rhynchocalycaceae (with B. G. Briggs, 1985) is accepted by the Angiosperm Phylogeny Group (APG). Hopkinsiaceae and Lyginiaceae, (which he and B. G. Briggs proposed in 2000 be carved out of Anarthriaceae), have not been accepted by the APG. Johnson died of cancer in 1997. He received many honours and awards, including:

1979 The Clarke Medal of the Royal Society of New South Wales 1984 The Mueller Medal of ANZAAS 1986 Elected a Fellow of the Australian Academy of Science 1987 Appointed a Member of the Order of Australia (AM) "For service to the science of botany as Director of the Royal Botanic Gardens in Sydney"

Works A classification of the eucalypts with L. D. Pryor, 1971, ISBN 0-7081-0563-7 The names of acacias of New South Wales with a guide to pronunciation of botanical names with Norman Hall, 1993, ISBN 0-7310-0118-4 The Royal Botanic Gardens, Sydney with A.N. Rodd, 1978, ISBN 0-7240-1609-0

References

External links Photo of L.A.S. Johnson https://photos.google.com/photo/AF1QipMkuZmpGpXobrdudA7WwEyk4QnrfjUbSyjhRC7B

Worked examples

Example 1 — a first encounter with Lawrence Alexander Sidney Johnson

Start with the simplest possible case. Write down what Lawrence Alexander Sidney Johnson 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 Lawrence Alexander Sidney Johnson 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 Lawrence Alexander Sidney Johnson 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 Lawrence Alexander Sidney Johnson

In research: Lawrence Alexander Sidney Johnson 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 Lawrence Alexander Sidney Johnson 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: Lawrence Alexander Sidney Johnson is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1925 births, 1997 deaths, 20th-century Australian botanists, so understanding it makes those chapters shorter.
In everyday life: Look for Lawrence Alexander Sidney Johnson 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 Lawrence Alexander Sidney Johnson in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Lawrence Alexander Sidney Johnson 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 Lawrence Alexander Sidney Johnson out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lawrence Alexander Sidney Johnson in simple terms?

Why does Lawrence Alexander Sidney Johnson 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 Lawrence Alexander Sidney Johnson?

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 Lawrence Alexander Sidney Johnson.