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chemistry

Rosalind Franklin

Rosalind Franklin is a chemistry 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 Rosalind Franklin rather than just read about it. In short: Rosalind Elsie Franklin (25 July 1920 – 16 April 1958) was an English chemist and X-ray crystallographer. Her work was central to the understanding of the molecular structures of DNA (deoxyribonucleic acid), RNA (ribonucleic acid), viruses, coal, and graphite.

Rosalind Franklin — main illustration
Rosalind Franklin — illustration

Key takeaways

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

Reference excerpt

Rosalind Elsie Franklin (25 July 1920 – 16 April 1958) was an English chemist and X-ray crystallographer. Her work was central to the understanding of the molecular structures of DNA (deoxyribonucleic acid), RNA (ribonucleic acid), viruses, coal, and graphite. Although her works on coal and viruses were appreciated in her lifetime, Franklin's contributions to the discovery of the structure of DNA were largely unrecognised during her life, for which Franklin has been variously referred to as the "wronged heroine", the "dark lady of DNA", the "forgotten heroine", a "feminist icon", and the "Sylvia Plath of molecular biology". James Watson believed that, had she not died, ideally, Franklin would have been awarded a Nobel Prize in Chemistry. Franklin graduated in 1941 with a degree in natural sciences from Newnham College, Cambridge, and then enrolled for a PhD in physical chemistry under Ronald George Wreyford Norrish, the 1920 Chair of Physical Chemistry at the University of Cambridge. Disappointed by Norrish's lack of enthusiasm, she took up a research position under the British Coal Utilisation Research Association (BCURA) in 1942. The research on coal helped Franklin earn a PhD from Cambridge in 1945. Moving to Paris in 1947 as a chercheur (postdoctoral researcher) under Jacques Mering at the Laboratoire Central des Services Chimiques de l'État, she became an accomplished X-ray crystallographer. After joining King's College London in 1951 as a research associate, Franklin discovered some key properties of DNA, which eventually facilitated the correct description of the double helix structure of DNA. Owing to disagreement with her director, John Randall, and her colleague Maurice Wilkins, Franklin moved to Birkbeck College in 1953. Franklin is best known for her work on the X-ray diffraction images of DNA while at King's College London, particularly Photo 51, taken by her student Raymond Gosling, which led to the discovery of the DNA double helix for which Francis Crick, James Watson, and Maurice Wilkins shared the Nobel Prize in Physiology or Medicine in 1962. While Gosling actually took the famous Photo 51, Wilkins showed it to Watson without Franklin's permission. Working under John Desmond Bernal, Franklin led pioneering work at Birkbeck on the molecular structures of viruses. On the day before she was to unveil the structure of tobacco mosaic virus at an international fair in Brussels, Franklin died of ovarian cancer at age 37 in 1958. Her team member Aaron Klug continued her research, winning the Nobel Prize in Chemistry in 1982.

Early life Franklin was born on 25 July 1920 at 50 Chepstow Villas, Notting Hill, London, into an affluent and influential British Jewish family.

Family Franklin's father, Ellis Arthur Franklin, was a politically liberal London merchant banker who taught at the city's Working Men's College, and her mother was Muriel Frances Waley. Rosalind was the eldest daughter and the second of five children. David was the eldest son while Colin, Roland, and Jenifer were her younger siblings. Franklin's paternal great-uncle was Sir Herbert Samuel (later Viscount Samuel), who was the Home Secretary in 1916 and the first practising Jew to serve in the British Cabinet. Her aunt, Helen Caroline Franklin, known in the family as Mamie, was married to Norman Bentwich, who was the Attorney General in the British Mandate of Palestine. Helen was active in trade union organisation and the women's suffrage movement and was later a member of the London County Council. Franklin's uncle, Hugh Franklin, was another prominent figure in the suffrage movement, although his actions therein embarrassed the Franklin family. Rosalind's middle name, "Elsie", was in memory of Hugh's first wife, who died in the 1918 flu pandemic. Her family was actively involved with the Working Men's College, where her father taught the subjects of electricity, magnetism, and the history of the Great War in the evenings, later becoming the vice principal. Franklin's parents helped settle Jewish refugees from Europe who had escaped the Nazis, particularly those from the Kindertransport. They took in two Jewish children to their home, and one of them, a nine-year-old Austrian, Evi Eisenstädter, shared Jenifer's room.

Education From early childhood, Franklin showed exceptional scholastic abilities. At age six, she joined her brother Roland at Norland Place School, a private day school in west London. At that time, Franklin's aunt, Mamie (Helen Bentwich), described her to her husband: "Rosalind is alarmingly clever – she spends all her time doing arithmetic for pleasure, and invariably gets her sums right." Franklin also developed an early interest in cricket and hockey. At age nine, she entered a boarding school, Lindores School for Young Ladies in Sussex. The school was near the seaside, and the family wanted a good environment for Franklin's delicate health. Franklin was 11 when she went to St Paul's Girls' School in Hammersmith, west London, one of the few girls' schools in London that taught physics and chemistry. At St Paul's, she excelled in science, Latin, and sports. Franklin also learned German, and became fluent in French, a language she would later find useful. Franklin topped her classes, and won annual awards. Her only educational weakness was in music, for which the school music director, the composer Gustav Holst, once called upon her mother to enquire whether she might have suffered from hearing problems or tonsillitis. With six distinctions, Franklin passed her matriculation in 1938, winning a scholarship for university, the School Leaving Exhibition of £30 a year for three years, and £5 from her grandfather. Franklin's father asked her to give the scholarship to a deserving refugee student.

… excerpt ends here. Continue reading the full article.

Illustrations

Rosalind Franklin illustration
Rosalind Franklin: A satirical death note of A-DNA helix by Franklin and Gosling
A satirical death note of A-DNA helix by Franklin and Gosling
Rosalind Franklin: An electron micrograph of tobacco mosaic virus
An electron micrograph of tobacco mosaic virus
Rosalind Franklin: Blue plaque (now replaced) on The Eagle, Cambridge, with Franklin's name added at the bottom
Blue plaque (now replaced) on The Eagle, Cambridge, with Franklin's name added at the bottom
Rosalind Franklin: Mural inscription on King's College London's Franklin-Wilkins Building, co-named in honour of Rosalind Franklin's work
Mural inscription on King's College London's Franklin-Wilkins Building, co-named in honour of Rosalind Franklin's work

Worked examples

Example 1 — a first encounter with Rosalind Franklin

Start with the simplest possible case. Write down what Rosalind Franklin claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, 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 Rosalind Franklin 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 Rosalind Franklin 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 Rosalind Franklin

In research
Rosalind Franklin appears in chemistry 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 Rosalind Franklin 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
Rosalind Franklin is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1920 births, 1958 deaths, 20th-century British Jews, so understanding it makes those chapters shorter.
In everyday life
Look for Rosalind Franklin 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 Rosalind Franklin in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Rosalind Franklin means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Rosalind Franklin out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Rosalind Franklin in simple terms?

Rosalind Elsie Franklin (25 July 1920 – 16 April 1958) was an English chemist and X-ray crystallographer. Her work was central to the understanding of the molecular structures of DNA (deoxyribonucleic acid), RNA (ribonucleic acid), viruses, coal, and graphite.

Why does Rosalind Franklin matter?

Because it connects several chemistry 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 Rosalind Franklin?

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 Rosalind Franklin.

Tags

  • 1920 births
  • 1958 deaths
  • 20th-century British Jews
  • 20th-century British chemists
  • 20th-century British women biologists
  • 20th-century English biologists
  • 20th-century English chemists
  • 20th-century English women scientists
  • Academics of Birkbeck, University of London
  • Academics of King's College London
  • Alumni of Newnham College, Cambridge
  • British biophysicists

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