astronomy

Jnan Chandra Ghosh

Jnan Chandra Ghosh 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 Jnan Chandra Ghosh rather than just read about it. In short: Sir Jnan Chandra Ghosh or Jnanendra Chandra Ghosh (4 September 1894 – 21 January 1959) was an Indian chemist best known for his contribution to the development of scientific research, industrial development and technology education in India. He served as the director of the newly formed Eastern Higher Technical Institute in 1950, which was renamed as IIT Kharagpur in 1951.

Key takeaways

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

Reference excerpt

Sir Jnan Chandra Ghosh or Jnanendra Chandra Ghosh (4 September 1894 – 21 January 1959) was an Indian chemist best known for his contribution to the development of scientific research, industrial development and technology education in India. He served as the director of the newly formed Eastern Higher Technical Institute in 1950, which was renamed as IIT Kharagpur in 1951. He was also the director of the Indian Institute of Science Bangalore and Vice Chancellor of the University of Calcutta. He was also known for his resolution of the anomaly of strong electrolytes and the dissociation - ionization theory. Ghosh's other important contributions include his extensive study of photocatalysts under the influence of polarised light and developments of Fischer–Tropsch reaction for the synthesis of hydrocarbons. Dr. Ghosh made contributions in the field of the application of Differential Thermal Analysis (D.T.A) as a tool for the systematic study of solid catalysts. He also successfully guided research work on technical problems relating to the production from Indian raw materials of phosphatic fertilisers, ammonium sulphate, formaldehyde, potassium chlorate, etc. During his active career in building scientific research, technical education and industrial development, he was the Head of the Department of Chemistry at Dacca University, the Director of the Indian Institute of Science at Bangalore, the Director of the Indian Institute of Technology, Kharagpur, the Vice Chancellor of Calcutta University, and the Director-general of Industries and Supplies, Government of India. Jnan Chandra Ghosh polytechnic, a government technical education institute providing diploma in engineering is named after him, located at Mominpur area of Kolkata.

Biography

Jnan Chandra Ghosh was born in a Bengali Kayastha family in Giridih, Jharkhand, British India. The son of Ram Chandra Ghosh, J C Ghosh belonged to a family of mica mine owners and mica merchants. He had his initial schooling at Giridih High School, where he stood first in the Chotnagpur Division in 1909 and enrolled in Presidency College, Kolkata. At Presidency College, he was among the finest students who would later become famous scientists. In 1911, Jnan Chandra got fourth position in I.Sc. examination, while his other famous classmates Satyendranath Bose topped the list and Meghnad Saha got the third position. He passed both B.Sc. and M.Sc. as first in the first class in Chemistry and during this time he came under inspiring influence of Acharya Prafulla Chandra Ray. The Vice-Chancellor of Calcutta University, Sir Ashutosh Mukherjee invited Jnan Ghosh to join as a lecturer even before the results were published. After his M.Sc. he was appointed as a lecturer of the Chemistry Department of newly founded Rajabazar Science College, Calcutta. The Sir Tarak Nath Palit Scholarship and Premchand Raychand student of the year award enabled J C Ghosh to travel to England for his doctoral degree at University College of Science in London. In London, he took up research on various problems of photochemistry and he led to the exposition of theory of anomaly of strong electrolytes and the ionization theory. His scientific research drew appreciation from many famous scientists such as Max Planck, William Bragg and Walther Nernst. In 1918, he was awarded D.Sc. for his research on strong electrolytes. During his stay in London, he worked for some time under Frederick G. Donnan.

Career

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Jnan Chandra Ghosh

Start with the simplest possible case. Write down what Jnan Chandra Ghosh 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 Jnan Chandra Ghosh 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 Jnan Chandra Ghosh 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 Jnan Chandra Ghosh

In research: Jnan Chandra Ghosh 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 Jnan Chandra Ghosh 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: Jnan Chandra Ghosh is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1894 births, 1959 deaths, 20th-century Indian chemists, so understanding it makes those chapters shorter.
In everyday life: Look for Jnan Chandra Ghosh 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 Jnan Chandra Ghosh in 20 minutes

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

Frequently asked questions

What is Jnan Chandra Ghosh in simple terms?

Why does Jnan Chandra Ghosh 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 Jnan Chandra Ghosh?

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 Jnan Chandra Ghosh.