science

Ibn Jumayʿ

Ibn Jumayʿ 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 Ibn Jumayʿ rather than just read about it. In short: Abū al-Makārim Hibat Allāh ibn Zayn al-Dīn ibn Jumayʿ (هبة الله بن جميع, died 1198 / AH 594) was an Egyptian Jewish physician, and the chief physician at the court of Saladin. Life Ibn Jumayʿ was born to a Jewish family in Fustat, Egypt.

Key takeaways

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

Reference excerpt

Abū al-Makārim Hibat Allāh ibn Zayn al-Dīn ibn Jumayʿ (هبة الله بن جميع, died 1198 / AH 594) was an Egyptian Jewish physician, and the chief physician at the court of Saladin.

Life Ibn Jumayʿ was born to a Jewish family in Fustat, Egypt. He studied with the physician Ibn al-ʿAynzarbī (died 1153/AH 548) and entered the service of Saladin. According to Ibn Abi Usaibia's Lives of the Physicians, Ibn Jumayʿ wrote eight works on medical-related subjects. A contemporary of Moses Maimonides, Ibn Jumayʿ "became famous for having prevented a person having a cataleptic fit from being buried alive. He was the author of a number of medical writings, including al-Irshād li-maṣāliḥ, dedicated to al-Baysanī, the vizier to Saladin, and completed by Ibn Jumayʿ al-Isrā’īlī's son Abū Tahir Ismāʿīl."

Works Kitāb al-irshād li-masālih an-nufūs waʿl-ajssad [Guide to the Welfare of Souls and Bodies] (ed. and tr. by Hartmut Fähndrich) Treatise to Salāh ad-Dīn on the revival of the art of medicine, English and Arab text, Wiesbaden: Steiner, 1983.

References

Further reading Fenton, Paul B., 'The state of Arab medicine at the time of Maimonides according to Ibn Gumayʿ's Treatise on the Revival of the Art of Medicine, in Fred Rosner and Samuel S. Kottek, ed., Moses Maimonides - Physician, Scientist and Philosopher, 1993 Meyerhof, Max, 'Sultan Saladin's physician on the transmission of Greek medicine to the Arabs', Bulletin of the History of Medicine 18 (1945), 169-178

External links Ibn Jumay‘ al-Isrā’īlī or, Ibn Jami‘, Abū al-Makārim Hibat Allāh by National Library of Medicine

Worked examples

Example 1 — a first encounter with Ibn Jumayʿ

Start with the simplest possible case. Write down what Ibn Jumayʿ 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 Ibn Jumayʿ 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 Ibn Jumayʿ 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 Ibn Jumayʿ

In research: Ibn Jumayʿ 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 Ibn Jumayʿ 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: Ibn Jumayʿ is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1198 deaths, 12th-century Egyptian medical doctors, Medical doctors from Cairo, so understanding it makes those chapters shorter.
In everyday life: Look for Ibn Jumayʿ 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 Ibn Jumayʿ in 20 minutes

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

Frequently asked questions

What is Ibn Jumayʿ in simple terms?

Abū al-Makārim Hibat Allāh ibn Zayn al-Dīn ibn Jumayʿ (هبة الله بن جميع, died 1198 / AH 594) was an Egyptian Jewish physician, and the chief physician at the court of Saladin. Life Ibn Jumayʿ was born to a Jewish family in Fustat, Egypt.

Why does Ibn Jumayʿ 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 Ibn Jumayʿ?

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 Ibn Jumayʿ.