chemistry

Johann Ludwig Wilhelm Thudichum

Johann Ludwig Wilhelm Thudichum 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 Johann Ludwig Wilhelm Thudichum rather than just read about it. In short: Johann Ludwig Wilhelm Thudichum, also known as John Louis William Thudichum (August 27, 1829, Büdingen – September 7, 1901) was a German-born physician and biochemist. From 1847 he studied medicine at the University of Giessen, where he worked after hours in the laboratory of Justus von Liebig (1803–1873).

Key takeaways

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

Reference excerpt

Johann Ludwig Wilhelm Thudichum, also known as John Louis William Thudichum (August 27, 1829, Büdingen – September 7, 1901) was a German-born physician and biochemist. From 1847 he studied medicine at the University of Giessen, where he worked after hours in the laboratory of Justus von Liebig (1803–1873). In 1853 he moved to London, where he worked for the remainder of his career. Thudichum was a pioneer of British biochemistry, and a founder of "brain chemistry". He is credited with conducting chemical analyses of over one thousand human and animal brains. In his research, he isolated and characterized numerous compounds of the brain, such as cephalin, sphingomyelin, galactose, lactic acid and sphingosine. In 1884 he explained his findings in a publication titled "A Treatise on the Chemical Constitution of the Brain", a book that was widely criticized and rejected at the time by many in the scientific community. After his death, Thudichum's discoveries were realized to be important scientific contributions to the study of the chemical and molecular composition of the brain.

Thudichum was the author of numerous works, including books on non-medical topics such as viticulture and cookery. He also devised a specialized nasal speculum that is still in use by physicians today. Since 1974 the "Thudichum Medal Lecture" is awarded in England for outstanding achievements in the field of neurochemistry, and at Yale University, the "Thudichum Post–Doctoral Research Fellowship in Neuro-oncology" was founded within the fields of cell biology, neurochemistry and adult stem cell research to support the study of brain tumors. A collection of his papers are held at the National Library of Medicine in Bethesda, Maryland.

Selected writings "A treatise on the pathology of urine", London, John Churchill, 1858. "A treatise on gall-stones: their chemistry, pathology, and treatment. Illustrated with plates, 1863. "A treatise on the origin, nature, and varieties of wine; being a complete manual of viticulture and oenology", London, New York, Macmillan, 1872. "A manual of chemical physiology, including its points of contact with pathology", 1872. "On wines: their production, treatment, and use; six lectures", 1873. "A treatise on the chemical constitution of the brain", 1884. "On the coca of Peru and its immediate principles": their strengthening and healing powers, 1885. "The progress of medical chemistry comprising its application to physiology", Bailliere, Tindall and Cox, 1896.

References

The American Journal of Psychiatry Vol. 160, No. 3 J.L.W. Thudichum, 1829–1901.

Illustrations

Worked examples

Example 1 — a first encounter with Johann Ludwig Wilhelm Thudichum

Start with the simplest possible case. Write down what Johann Ludwig Wilhelm Thudichum 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 Johann Ludwig Wilhelm Thudichum 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 Johann Ludwig Wilhelm Thudichum 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 Johann Ludwig Wilhelm Thudichum

In research: Johann Ludwig Wilhelm Thudichum 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 Johann Ludwig Wilhelm Thudichum 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: Johann Ludwig Wilhelm Thudichum is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1829 births, 1901 deaths, German biochemists, so understanding it makes those chapters shorter.
In everyday life: Look for Johann Ludwig Wilhelm Thudichum 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 Johann Ludwig Wilhelm Thudichum in 20 minutes

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

Frequently asked questions

What is Johann Ludwig Wilhelm Thudichum in simple terms?

Why does Johann Ludwig Wilhelm Thudichum 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 Johann Ludwig Wilhelm Thudichum?

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 Johann Ludwig Wilhelm Thudichum.