astronomy

Johannes Herman Frederik Umbgrove

Johannes Herman Frederik Umbgrove 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 Johannes Herman Frederik Umbgrove rather than just read about it. In short: Johannes Herman Frederik Umbgrove HFRSE (5 February 1899 Hulsberg (Limburg) – 14 June 1954 Wassenaar), called in short Jan Umbgrove, was a Dutch geologist and earth scientist. Life Umbgrove studied geology at Leiden University, he finished his studies in 1926.

Key takeaways

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

Reference excerpt

Johannes Herman Frederik Umbgrove HFRSE (5 February 1899 Hulsberg (Limburg) – 14 June 1954 Wassenaar), called in short Jan Umbgrove, was a Dutch geologist and earth scientist.

Life Umbgrove studied geology at Leiden University, he finished his studies in 1926. He then became employed as a paleontologist for the Dienst van de Mijnbouw in Nederlands Indië (Geological Survey of the Dutch East Indies), where he studied Tertiary foraminifera and corals. He also studied volcanoes, tectonics, coastal morphology and the bathymetry of the seas surrounding the Sunda Islands. From 1929 he went back to Leiden to become the assistant of his former teacher B.G. Escher. In 1930 he became professor in stratigraphy and paleontology at Delft University. His research was again multidisciplinary. He studied the paleogeography of the Dutch East Indies from the data acquired by the gravitational surveys of F.A. Vening Meinesz, the paleontology of corals and coral reefs, tectonics, the geology of the Netherlands and volcanology. Because of his broad field of interest he was one of the first to think of the Earth as one dynamic system, an idea on which he wrote his book the Pulse of the Earth in 1942. Another book on paleontology was published in 1943. He became a member of the Royal Netherlands Academy of Arts and Sciences in 1946. When he became seriously ill in 1952, he continued to write from his bed until his death on 14 June 1954.

Selected publication Umbgrove, JHF (1942). The Pulse of the Earth. The Hague, NL: Nyhoff.

References

Sources I.M. van der Vlerk & Ph. H. Kuenen, 1954: levensbericht van Johannes Herman Frederik Umbgrove in Geologie & Mijnbouw, vol. 16, p. 339–346 A.J. Pannekoek, 1962: Geological research at the universities of The Netherlands, 1877-1962 in Geologie & Mijnbouw, vol. 41 no. 4 p. 161–174

Worked examples

Example 1 — a first encounter with Johannes Herman Frederik Umbgrove

Start with the simplest possible case. Write down what Johannes Herman Frederik Umbgrove 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 Johannes Herman Frederik Umbgrove 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 Johannes Herman Frederik Umbgrove 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 Johannes Herman Frederik Umbgrove

In research: Johannes Herman Frederik Umbgrove 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 Johannes Herman Frederik Umbgrove 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: Johannes Herman Frederik Umbgrove is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1899 births, 1954 deaths, 20th-century Dutch geologists, so understanding it makes those chapters shorter.
In everyday life: Look for Johannes Herman Frederik Umbgrove 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Johannes Herman Frederik Umbgrove” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Johannes Herman Frederik Umbgrove in 20 minutes

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

Frequently asked questions

What is Johannes Herman Frederik Umbgrove in simple terms?

Johannes Herman Frederik Umbgrove HFRSE (5 February 1899 Hulsberg (Limburg) – 14 June 1954 Wassenaar), called in short Jan Umbgrove, was a Dutch geologist and earth scientist. Life Umbgrove studied geology at Leiden University, he finished his studies in 1926.

Why does Johannes Herman Frederik Umbgrove 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 Johannes Herman Frederik Umbgrove?

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 Johannes Herman Frederik Umbgrove.