astronomy

Subhendu Guha

Subhendu Guha 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 Subhendu Guha rather than just read about it. In short: Subhendu Guha (born 1942 in Dhaka) is an Indian scientist in the field of photovoltaics. Early life and career Subhendu Guha was born in 1942 in Dhaka.

Key takeaways

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

Reference excerpt

Subhendu Guha (born 1942 in Dhaka) is an Indian scientist in the field of photovoltaics.

Early life and career Subhendu Guha was born in 1942 in Dhaka. Subhendu studied at Presidency College, Kolkata, and obtained his M.Tech. and PhD from the University of Calcutta. Subhendu developed a new process for making Amorphous silicon in 1979 after he joined Tata Institute of Fundamental Research, Mumbai in 1968. In 1991, he led a team of scientists at United Solar that made innovations to achieve efficiency solar cells and modules using Thin-film solar cell silicon and also the invention of flexible solar roofing shingles. In 2006, when Subhendu was President of United Solar, he discussed solar technology with President George W. Bush during the president's visit to United Solar. He has also served as a panelist on the US Senate committee on energy and natural resources.

Awards and recognition Subhendu is a recipient of the Bright Light Award from the US Department of Energy, and the PVSEC 2009 award for outstanding contribution to science and technology of photovoltaic. He also received the World Technology Award and the Best of the Best Award from ABP Ananda for his contribution to science.

Selected publications Backreflector morphology effects and thermodynamic light-trapping in thin-film silicon solar cells. High efficiency multi-junction thin film silicon cells incorporating nanocrystalline silicon. On light‐induced effect in amorphous hydrogenated silicon

References

Worked examples

Example 1 — a first encounter with Subhendu Guha

Start with the simplest possible case. Write down what Subhendu Guha 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 Subhendu Guha 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 Subhendu Guha 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 Subhendu Guha

In research: Subhendu Guha 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 Subhendu Guha 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: Subhendu Guha is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1942 births, 20th-century Indian engineers, 21st-century Indian inventors, so understanding it makes those chapters shorter.
In everyday life: Look for Subhendu Guha 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 Subhendu Guha in 20 minutes

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

Frequently asked questions

What is Subhendu Guha in simple terms?

Subhendu Guha (born 1942 in Dhaka) is an Indian scientist in the field of photovoltaics. Early life and career Subhendu Guha was born in 1942 in Dhaka.

Why does Subhendu Guha 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 Subhendu Guha?

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 Subhendu Guha.