astronomy

Karlis Kaufmanis

Karlis Kaufmanis 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 Karlis Kaufmanis rather than just read about it. In short: Kārlis Kaufmanis (February 21, 1910, Riga, Latvia – June 21, 2003, Clearwater, Florida) was a Latvian-American astronomer. He is noted for his theory, on which he delivered a public lecture more than a thousand times, that the Star of Bethlehem was a conjunction of the planets Jupiter and Saturn that took place in 7 BC.

Key takeaways

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

Reference excerpt

Kārlis Kaufmanis (February 21, 1910, Riga, Latvia – June 21, 2003, Clearwater, Florida) was a Latvian-American astronomer. He is noted for his theory, on which he delivered a public lecture more than a thousand times, that the Star of Bethlehem was a conjunction of the planets Jupiter and Saturn that took place in 7 BC. He was also the author of several textbooks on astronomy, mathematics, and cosmology. He held positions at the University of Latvia (1936–40), the French Lyceum (1940–44), and the Esslingen Gymnasium in Germany (1945–48). He moved to Gustavus Adolphus College in St. Peter, Minnesota as an associate professor in 1949. He joined the University of Minnesota as a visiting lecturer in 1961 and became an associate professor in 1963. He held the rank of full professor from 1970 until his retirement in 1978. From time to time the School of Physics and Astronomy at the University of Minnesota holds the Karlis Kaufmanis Public Lecture. Speakers have included Clyde Tombaugh, discoverer of the dwarf planet Pluto, Carolyn Porco, noted for imaging work on the Voyager missions, and Michael E. Brown, discoverer of several dwarf planets in the Kuiper belt.

Patron of the University of Latvia Kārlis Kaufmanis is a silver patron of the University of Latvia Foundation. In 2003, 100,000 US dollars were bequeathed to the University of Latvia to promote the development of astronomy in Latvia. The will was used as an inviolable capital from which scholarships are paid to talented astronomy students.

Notes and references

External links An article by Kaufmanis on the Star of Bethlehem, reprinted in the newsletter of the University of Minnesota's Department of Astronomy shortly after Kaufmanis' death, starting on page 2 The Star Of Bethlehem by Karlis Kaufmanis

Worked examples

Example 1 — a first encounter with Karlis Kaufmanis

Start with the simplest possible case. Write down what Karlis Kaufmanis 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 Karlis Kaufmanis 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 Karlis Kaufmanis 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 Karlis Kaufmanis

In research: Karlis Kaufmanis 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 Karlis Kaufmanis 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: Karlis Kaufmanis is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1910 births, 2003 deaths, Academic staff of the University of Latvia, so understanding it makes those chapters shorter.
In everyday life: Look for Karlis Kaufmanis 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 Karlis Kaufmanis in 20 minutes

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

Frequently asked questions

What is Karlis Kaufmanis in simple terms?

Why does Karlis Kaufmanis 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 Karlis Kaufmanis?

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 Karlis Kaufmanis.