astronomy

Jacques Anselme Dorthès

Jacques Anselme Dorthès 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 Jacques Anselme Dorthès rather than just read about it. In short: Jacques Anselme Dorthès, born in Vauvert (Gard) on 19 July 1759 and died during the 1794 campaign of the Army of the Eastern Pyrenees, was a French physician, entomologist and naturalist. Biography Destined to enter the orders, he abandoned the seminary in 1784 and turned to medicine.

Key takeaways

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

Reference excerpt

Jacques Anselme Dorthès, born in Vauvert (Gard) on 19 July 1759 and died during the 1794 campaign of the Army of the Eastern Pyrenees, was a French physician, entomologist and naturalist.

Biography Destined to enter the orders, he abandoned the seminary in 1784 and turned to medicine. He studied at the University of Montpellier where he became a doctor of medicine in 1787. At the same time, he became interested in entomology and botany, particularly with Antoine Gouan. He participated unsuccessfully in the competition for the medicine professorship of 1789-1790 opened on the death of professors Jean Sabatier and Jean-Charles de Grimaud. He died on active service during the campaign of 1794, when he had gone to serve voluntarily as a military doctor in hospitals.

Works On December 20, 1787, he read to the Royal Society of Sciences of Montpellier a memoir containing observations on a new genus of insect. The protonym Dorthesia, given to a scale insect, was created in its honour following this first description on the leaves of a euphorbia (Euphorbia charachias) near Nîmes. The species Dorthesia characias was described by Arsène Thiébaut de Berneaud. John Obadiah Westwood described the species Dorthesia seychellarum later called Icerya seychellarum. The name Dorthesia was changed to Dorthezia and then to Orthezia. The same year, he joined the Royal Society of Sciences of Montpellier. He successively published various productions relating to natural history and rural economy:

Observations of a singular phenomenon, caused by a multitude of black ants (Formica nigra) gathered in the atmosphere, which they obscure like a cloud; Research on the pine processionary caterpillar; Memories on how to protect chestnut trees from caterpillar damage, on the insects that devour young plants, on those that damage wheat and alfalfa; Memory on the clematis (Clematis flammula) with which he proposes to form artificial meadows, to multiply and improve the fodder in his regions; Overview of the Mediterranean aggradations in the Lower Languedoc. In 1788, he won the prize of the Royal Society of Sciences of Montpellier by writing the eulogy of Pierre Richer de Belleval. He published a number of entomological articles in the “Mémoires de la Société royale d'agriculture de France” of which he was a corresponding member. He was a member of the Linnean Society of London and he corresponded with James Edward Smith. He was also a geologist. We owe him a dissertation on the rolled pebbles of the Rhône composed with the Baron de Servières and dissertations on other stones around Nîmes including variolite.

References

Bibliography Dumas, C.L. (1809). Recueil des bulletins, publiés par la Société libre des sciences et belles-lettres de Montpellier (in French). Montpellier: Veuve Tournel et fils. Retrieved 25 February 2021. Saucerotte, Constant (1887). Les Médecins pendant la Révolution (in French). Paris: Perrin. p. 192. Retrieved 25 February 2021.

External links Dorthès on IPNI

Worked examples

Example 1 — a first encounter with Jacques Anselme Dorthès

Start with the simplest possible case. Write down what Jacques Anselme Dorthès 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 Jacques Anselme Dorthès 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 Jacques Anselme Dorthès 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 Jacques Anselme Dorthès

In research: Jacques Anselme Dorthès 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 Jacques Anselme Dorthès 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: Jacques Anselme Dorthès is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1759 births, 1794 deaths, 18th-century French medical doctors, so understanding it makes those chapters shorter.
In everyday life: Look for Jacques Anselme Dorthès 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 Jacques Anselme Dorthès in 20 minutes

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Frequently asked questions

What is Jacques Anselme Dorthès in simple terms?

Jacques Anselme Dorthès, born in Vauvert (Gard) on 19 July 1759 and died during the 1794 campaign of the Army of the Eastern Pyrenees, was a French physician, entomologist and naturalist. Biography Destined to enter the orders, he abandoned the seminary in 1784 and turned to medicine.

Why does Jacques Anselme Dorthès 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 Jacques Anselme Dorthès?

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 Jacques Anselme Dorthès.