science

The Casella Sisters

The Casella Sisters is a science 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 The Casella Sisters rather than just read about it. In short: Ella and Nelia Casella (1858-1946 and 1859-1950) were British artists, sculptors, and medalists, known for their collaborative work. Both sisters worked frequently in wax, creating portraits which are now held by the Victoria and Albert Museum.

Key takeaways

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

Reference excerpt

Ella and Nelia Casella (1858-1946 and 1859-1950) were British artists, sculptors, and medalists, known for their collaborative work. Both sisters worked frequently in wax, creating portraits which are now held by the Victoria and Albert Museum. They worked together on a variety of illustrations and medal commissions.

Career Ella (3 January 1858 – 3 September 1946) and Nelia Casella (23 July 1859 – 29 April 1950) studied at the Slade School of Art under the tutelage of Alphonse Legros. Commissions to the sisters were usually answered in correspondence by 'Miss Casella' and so it is difficult to know which sister was the correspondent.

Jackson-Gwilt Medal In 1895, the Casella sisters were commissioned by the Royal Astronomical Society to create the medal for the Jackson-Gwilt Prize in Astronomy.

Artwork

Ella Casella Relief of St. George and the Dragon, 1897, Victoria and Albert Museum Woman in Renaissance Costume, 1890-1900, Victoria and Albert Museum Stained holly wood box, 1900, Victoria and Albert Museum Euterpe, 1901

Nelia Casella Gilt and enamel bottle, 1892, Victoria and Albert Museum Man in Renaissance Costume, 1899, Victoria and Albert Museum Illustrations to Percy Pitt's score for Cinderella, 1900 Boy Holding a Rose, 1903, Victoria and Albert Museum Carnations, 1907, Victoria and Albert Museum Silvia Bella, 1908, Victoria and Albert Museum Dante

Joint work by the Casella sisters Illustrations for 'Dreams, Dances and Disappointments' (1881) and 'The Maypole' (1882) by Gertrude A. Konstam The Charcot Medal, late 19th Century, examples in: Victoria and Albert Museum, British Museum The Jackson-Gwilt Medal, 1897 Italian Renaissance Lady and Gentleman

References

Worked examples

Example 1 — a first encounter with The Casella Sisters

Start with the simplest possible case. Write down what The Casella Sisters claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 The Casella Sisters 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 The Casella Sisters 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 The Casella Sisters

In research: The Casella Sisters appears in science 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 The Casella Sisters 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: The Casella Sisters is common in secondary-school and first-year university syllabi. It links to neighbouring topics 19th-century English medallists, 19th-century English women artists, 20th-century English medallists, so understanding it makes those chapters shorter.
In everyday life: Look for The Casella Sisters 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 The Casella Sisters in 20 minutes

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

Frequently asked questions

What is The Casella Sisters in simple terms?

Why does The Casella Sisters matter?

Because it connects several science 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 The Casella Sisters?

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 The Casella Sisters.