astronomy

Jules Bordet

Jules Bordet 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 Jules Bordet rather than just read about it. In short: Jules Jean Baptiste Vincent Bordet ( bor-DAY, French: [ʒyl ʒɑ̃ batist vɛ̃sɑ̃ bɔʁdɛ]; 13 June 1870 – 6 April 1961) was a Belgian immunologist and microbiologist. The bacterial genus Bordetella is named after him.

Key takeaways

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

Reference excerpt

Jules Jean Baptiste Vincent Bordet ( bor-DAY, French: [ʒyl ʒɑ̃ batist vɛ̃sɑ̃ bɔʁdɛ]; 13 June 1870 – 6 April 1961) was a Belgian immunologist and microbiologist. The bacterial genus Bordetella is named after him. The Nobel Prize in Physiology or Medicine was awarded to him in 1919 for his discoveries relating to immunity.

Education and early life

Bordet was born at Soignies, Belgium. He graduated as Doctor of Medicine from the Free University of Brussels in 1892 and began his work at the Pasteur Institute in Paris in 1894, in the laboratory of Elie Metchnikoff, who had just discovered phagocytosis of bacteria by white blood cells, an expression of cellular immunity.

Career

In 1895 Bordet made his discovery that the bacteriolytic effect of acquired specific antibody is significantly enhanced in vivo by the presence of innate serum components which he termed alexine (but which are now known as complement). Four years later, in 1899, he described a similar destructive process involving complement, "hemolysis", in which foreign red blood cells are ruptured or "lysed" following exposure to immune serum. In 1900, he left Paris to found an institute in Brussels like Pasteur's, and continued to work extensively on the mechanisms involved in the action of complement. These studies became the basis for complement-fixation testing methods that enabled the development of serological tests for syphilis (specifically, the development of the Wassermann test by August von Wassermann). The same technique is used today in serologic testing for countless other diseases. With Octave Gengou, he isolated Bordetella pertussis in pure culture in 1906 and posited it as the cause of whooping cough. He became Professor of Bacteriology at the Université libre de Bruxelles in 1907.

Awards and honours In March 1916, he was elected a Foreign Member of the Royal Society and in 1930, delivered their Croonian Lecture. In this lecture, Bordet also concluded that bacteriophages, the bacteria-killing "invisible viruses" discovered by Felix d'Herelle did not exist and that bacteria destroyed themselves using a process of autolysis. This theory collapsed in 1941 with the publication by Ruska of the first electron microscope pictures of bacteriophages. The Nobel Prize in Physiology or Medicine was awarded to him in 1919 for his discoveries relating to immunity. Bordet died in 1961 and was interred in the Ixelles Cemetery in Brussels.

1919: Member of the Royal Academy of Science, Letters and Fine Arts of Belgium. 1921: Awarded the Cameron Prize for Therapeutics of the University of Edinburgh. The Bordet railway station in Brussels is named after him. The cancer hospital Institut Jules Bordet is also named after him.

References

Jules Bordet (Frederick P. Gay translator) (1909) Studies in Immunity, John Wiley & Sons, link from Internet Archive.

External links Jules Bordet on Nobelprize.org The Nobel Prize in Physiology or Medicine 1919 Works by or about Jules Bordet at the Internet Archive a longer Biography page at Jules Bordet Institute Jules Bordet Institute

Illustrations

Worked examples

Example 1 — a first encounter with Jules Bordet

Start with the simplest possible case. Write down what Jules Bordet 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 Jules Bordet 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 Jules Bordet 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 Jules Bordet

In research: Jules Bordet 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 Jules Bordet 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: Jules Bordet is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1870 births, 1961 deaths, Academic staff of the Free University of Brussels (1834–1969), so understanding it makes those chapters shorter.
In everyday life: Look for Jules Bordet 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 Jules Bordet in 20 minutes

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

Frequently asked questions

What is Jules Bordet in simple terms?

Why does Jules Bordet 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 Jules Bordet?

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 Jules Bordet.