astronomy

Vishnu-Mittre

Vishnu-Mittre 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 Vishnu-Mittre rather than just read about it. In short: Vishnu-Mittre or Vishnu Mittre (17 July 1924 – 6 November 1991) was an Indian paleobotanist who worked at the Birbal Sahni Institute and wrote numerous influential papers and popular books on earth history, particularly with reference to the Indian region. He worked along with archaeologists in pioneering studies of agricultural crops in early human settlements on the Indian Subcontinent.

Key takeaways

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

Reference excerpt

Vishnu-Mittre or Vishnu Mittre (17 July 1924 – 6 November 1991) was an Indian paleobotanist who worked at the Birbal Sahni Institute and wrote numerous influential papers and popular books on earth history, particularly with reference to the Indian region. He worked along with archaeologists in pioneering studies of agricultural crops in early human settlements on the Indian Subcontinent.

Biography Vishnu-Mittre was born in Shorkot, Jhang District of Pakistan. After studying at Rawalpindi, he obtained a BSc from Gordon College in 1944 and became a school teacher in biology at D.A.V. College and later at D.C.Jain College. He then joined the Benaras Hindu University and received an MSc in botany in 1951. He then joined the Birbal Sahni Institute of Paleobotany in Lucknow and studied Mesozoic plants. He was deputed to Emmanuel College, Cambridge University from where he received a Ph.D. in 1960 after working under Sir Harry Godwin on Quaternary palynology. He returned to the Birbal Sahni Institute and started a palynology department and served as the deputy director of the institute from 1983 to 1984.

Publications Vishnu-Mittre wrote numerous papers and also wrote two popular work on earth history and evolution, Evolution of Life (1969, coauthored with M.S.Randhawa and others) and Rocks unfold the Past (1973). Among his researches were studies of pollen at archaeological sites to gain an understanding on agriculture and the usage of plant materials in the past. Some of his publications include:

Vishnu-Mittre (1954). "Petrified spores and pollen grains from the Jurassic rocks of Rajmahal Hills, Bihar" (PDF). The Palaeobotanist. 3: 117–127. Erdtman, G.; Vishnu-Mittre (1956). "On terminology in pollen and spore morphology" (PDF). Palaeobotanist. 5 (2): 109–111. Vishnu-Mittre (1968). "Protohistoric records of agriculture in India". Trans. Bose Res. Inst. Calcutta. 31: 87–106. Vishnu-Mittre (1972). "Neolithic plants economy at Chirand, Bihar" (PDF). Palaeobotanist. 21 (1): 18–22. Vishnu-Mittre (1976). "Palaeoecology of the Rajasthan desert during the last 10,000" (PDF). Palaeobotanist. 25: 549–558. Vishnu-Mittre; Gupta, H.P. (1970). "The origin of Shola Forest in the Nilgiris, South India" (PDF). Palaeobotanist. 19 (1): 110–114. Vishnu-Mittre (1979). "Palaeobotanical evidences of the environment of early man in northwestern and western India". Grana. 18 (3): 167–181. doi:10.1080/00173137909424976. Vishnu-Mittre; Guzder, Statira (1973). "The early domestication of plants in south and southeast Asia - a critical review" (PDF). Palaeobotanist. 22 (2): 83–88. [The URL given is in fact that of the subsequent "Quaternary Palaeobotany/Palynology" article, and not that of the article cited. Will someone please correct?] Vishnu-Mittre (1983). "Quaternary Palaeobotany/Palynology in the Himalaya an overview" (PDF). Palaeobotanist. 32 (2): 158–187. Vishnu-Mittre; Savithri, R. (1976). "Setaria in Ancient plant economy of India" (PDF). Palaeobotanist. 25: 559–564. In 1968 Vishnu-Mittre suggested that a sample of carbonised grain dating to 1800 BC from Hallur contained Eleusine suggesting Indian origins to the cultivation of ragi. The samples were re-examined by others in 1979 and the identification was found to be incorrect, in fact the suggestion was that the grain did not even match that of a monocot.

References

Worked examples

Example 1 — a first encounter with Vishnu-Mittre

Start with the simplest possible case. Write down what Vishnu-Mittre 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 Vishnu-Mittre 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 Vishnu-Mittre 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 Vishnu-Mittre

In research: Vishnu-Mittre 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 Vishnu-Mittre 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: Vishnu-Mittre is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1924 births, 1991 deaths, Banaras Hindu University alumni, so understanding it makes those chapters shorter.
In everyday life: Look for Vishnu-Mittre 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 Vishnu-Mittre in 20 minutes

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

Frequently asked questions

What is Vishnu-Mittre in simple terms?

Why does Vishnu-Mittre 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 Vishnu-Mittre?

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 Vishnu-Mittre.