physics

John Ellis (physicist, born 1963)

John Ellis (physicist, born 1963) is a physics 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 John Ellis (physicist, born 1963) rather than just read about it. In short: John Ellis is the current director of studies for Natural Sciences at Gonville and Caius College, Cambridge. His research is on helium-3 surface spin echo, an inelastic scattering technique.

Key takeaways

John Ellis (physicist, born 1963) belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect John Ellis (physicist, born 1963) to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of John Ellis (physicist, born 1963) from memory before moving on to harder problems.

Reference excerpt

John Ellis is the current director of studies for Natural Sciences at Gonville and Caius College, Cambridge. His research is on helium-3 surface spin echo, an inelastic scattering technique.

Early life and education Ellis studied at St John's College, Cambridge, where he obtained a first-class degree in natural sciences. He obtained a PhD in surface physics from the Cavendish Laboratory, Cambridge. He then spent three years at the Max Planck Institute for Dynamics and Self-Organization in Göttingen, during which he continued using helium scattering to probe surface structure and dynamics. Thereafter, he returned to Cambridge as a fellow of Lloyd's Tercentenary Research Foundation, later progressing to an EPSRC advanced fellow. He went on to become the assistant director of research at the Cavendish Laboratory, where he led the development of the Cavendish’s spin-echo instrument and research project.

Research Ellis specialises in surface physics and imaging techniques.

Helium-3 spin-echo spectroscopy This technique has the potential for measurements on a nanoscale distance and over picosecond timescales. Ellis published a complete review of the current progress and future scientific challenges in this field in 2009.

Awards Ellis was nominated for the Student-Led Teaching Awards in 2019. This is an award given by the Cambridge University Students' Union annually with the nominations made by the students.

References

Worked examples

Example 1 — a first encounter with John Ellis (physicist, born 1963)

Start with the simplest possible case. Write down what John Ellis (physicist, born 1963) claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, 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 John Ellis (physicist, born 1963) 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 John Ellis (physicist, born 1963) 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 John Ellis (physicist, born 1963)

In research: John Ellis (physicist, born 1963) appears in physics 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 John Ellis (physicist, born 1963) 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: John Ellis (physicist, born 1963) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Alumni of St John's College, Cambridge, British physicists, Fellows of Gonville and Caius College, Cambridge, so understanding it makes those chapters shorter.
In everyday life: Look for John Ellis (physicist, born 1963) 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 John Ellis (physicist, born 1963) in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what John Ellis (physicist, born 1963) 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 John Ellis (physicist, born 1963) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is John Ellis (physicist, born 1963) in simple terms?

John Ellis is the current director of studies for Natural Sciences at Gonville and Caius College, Cambridge. His research is on helium-3 surface spin echo, an inelastic scattering technique.

Why does John Ellis (physicist, born 1963) matter?

Because it connects several physics 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 John Ellis (physicist, born 1963)?

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 John Ellis (physicist, born 1963).