science

Johan Havaas

Johan Havaas 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 Johan Havaas rather than just read about it. In short: Johan Johnsen Havaas (Havås) (19 October 1864–27 April 1956) was a farmer and botanist from Granvin Municipality (at that time it was called Ulvik Municipality) in Søndre Bergenhus county, Norway. Early life and career Johan Havaas grew up on the farm Havås in Granvin Municipality and took an early interest in natural history and botany.

Key takeaways

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

Reference excerpt

Early life and career Johan Havaas grew up on the farm Havås in Granvin Municipality and took an early interest in natural history and botany. He was particularly interested in the cryptogam flora. Havaas had only social studies and was largely self-taught, and also learned foreign languages (including Latin, English, German, French, Portuguese and Spanish) on his own, so he could both exchange letters with scientists abroad and publish his dissertations. With support from the Bergen Museum, among others, he traveled all over the country and collected and recorded large quantities of mosses, lichens and parasitic fungi. His interest was too low, and he himself described about 6 new species. For example, he found the first specimen of the lichen coastal coral lichen (Bunodophoron melanocarpum) in Norway, near Mosterhamn in Sunnhordaland in 1912. In 1911 he registered a find of bog herring (Saxifraga hypnoides) in Stadlandet, a moss that was first found in Norway in the early 1800s. Two lichens have been given a species epithet named after him. One is Flavoplaca havaasii, the other is Umbilicaria havaasii. His work aroused international interest, while he has been less well known in Norway. The Granvin Bygdatun Museum has a collection after Johan Havaas, otherwise there are collections after him at the University of Bergen and at Duke University in North Carolina in the USA. In 1934 he was honored with the King's Medal of Merit in gold. He continued to run his father's farm in Granvin even in his old age. He probably had the last kvanngarden in Granvin.

Selected publications Floristiske undersøgelser i Søndre Bergenhus Amt (1897) (I Bergens museums aarbok 1897) Nye findsteder for nogle sjeldnere lichener (1899) (I Bergens museums aarbok 1899) Om vegetationen paa Hardangervidden (1902) (I Bergens museums aarbok 1902) Beiträge zur Kenntnis der west-norwegischen Flechtflora 1 (1909) (I Bergens museums aarbok 1909) Lichenvegetationen ved Mosterhavn (1916) (I Bergens museums aarbok 1917—1918) Om vegetasjonen på toppen av Hårteigen (1927) (I Bergens museums aarbok 1927) Om lichenvegetasjonen på Stadtlandet (1935) (I Bergens museums aarbok 1935) Notes to the lichen flora of the mountains Steinsæterhorgi and Smøreggfjellet in Granvin, Hordaland fylke (1954) (Årbok for *Universitetet i Bergen 1954) Granvins løvmosflora (1961) (Årbok for Universitetet i Bergen 1961) Johan Havaas has also published two valuable exsiccata works:

Lichenes exsiccati Norvegiae, a museo Bergensi editi Lichenes Norvegiae occidentalis exsiccati, a museo Bergensi editi

References

Illustrations

Worked examples

Example 1 — a first encounter with Johan Havaas

Start with the simplest possible case. Write down what Johan Havaas 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 Johan Havaas 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 Johan Havaas 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 Johan Havaas

In research: Johan Havaas 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 Johan Havaas 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: Johan Havaas is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1864 births, 1956 deaths, 19th-century Norwegian botanists, so understanding it makes those chapters shorter.
In everyday life: Look for Johan Havaas 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 Johan Havaas in 20 minutes

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

Frequently asked questions

What is Johan Havaas in simple terms?

Johan Johnsen Havaas (Havås) (19 October 1864–27 April 1956) was a farmer and botanist from Granvin Municipality (at that time it was called Ulvik Municipality) in Søndre Bergenhus county, Norway. Early life and career Johan Havaas grew up on the farm Havås in Granvin Municipality and took an early…

Why does Johan Havaas 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 Johan Havaas?

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 Johan Havaas.