astronomy

Michiel Daniel Overbeek

Michiel Daniel Overbeek 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 Michiel Daniel Overbeek rather than just read about it. In short: Michiel Daniel Overbeek (15 September 1920 in Ermelo, Mpumalanga, South Africa – 19 July 2001 in Johannesburg), also known as Danie Overbeek, was a South African amateur astronomer and one of the most prolific variable star observers. Life He studied in a Mining and Metallurgy program at the University of the Witwatersrand.

Key takeaways

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

Reference excerpt

Michiel Daniel Overbeek (15 September 1920 in Ermelo, Mpumalanga, South Africa – 19 July 2001 in Johannesburg), also known as Danie Overbeek, was a South African amateur astronomer and one of the most prolific variable star observers.

Life He studied in a Mining and Metallurgy program at the University of the Witwatersrand. During the Second World War he served in the South African Air Force and was awarded the Africa Star and mentioned in Dispatches. After the war he worked for South African Airways and South African Railways. In 1945, he married Jean Mary Preddy, with whom he had four children. She died in 1985.

Astronomy Daniel Overbeek's serious interest in astronomy dates back to 1951, when he started observing occultations and variable stars. In 1958 he earned a B.Sc. degree in mathematics and astronomy from the University of South Africa. During his lifetime, he contributed 287,240 observations to the American Association of Variable Star Observers (AAVSO) International Database, becoming the most prolific AAVSO contributor. In 1998, he became the first amateur astronomer who detected supernova related gamma ray burst effects. He also monitored Earth's magnetic field and seismic activity with a magnetometer and a seismograph he had built, and observed sudden ionospheric disturbance.

Acknowledgement In 1956, Overbeek became the chairman of the Transvaal Centre of the Astronomical Society of Southern Africa (ASSA). He was elected the president of the ASSA twice: in 1961 and 1999. In 1984, he was awarded the Gill Medal, the highest ASSA honour. The American Association of Variable Star Observers awarded him with the Merit Award in 1986 and the Director's Award in 1994. He was also a multiple AAVSO Observer awardee: in 1994 for making 100,000 variable star observations, in 1997 for 200,000 and in 1999 for 250,000 observations. In 1995, he received the Christos Papadopoulos Trophy of the Transvaal Centre of the ASSA. He also won the Amateur Achievement Award of the Astronomical Society of the Pacific in 1996. The Mars-crosser asteroid 5038 Overbeek was named in his honour in 2000.

References

Worked examples

Example 1 — a first encounter with Michiel Daniel Overbeek

Start with the simplest possible case. Write down what Michiel Daniel Overbeek 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 Michiel Daniel Overbeek 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 Michiel Daniel Overbeek 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 Michiel Daniel Overbeek

In research: Michiel Daniel Overbeek 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 Michiel Daniel Overbeek 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: Michiel Daniel Overbeek is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1920 births, 2001 deaths, 20th-century astronomers, so understanding it makes those chapters shorter.
In everyday life: Look for Michiel Daniel Overbeek 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 Michiel Daniel Overbeek in 20 minutes

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

Frequently asked questions

What is Michiel Daniel Overbeek in simple terms?

Why does Michiel Daniel Overbeek 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 Michiel Daniel Overbeek?

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 Michiel Daniel Overbeek.