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On Weights and Measures

On Weights and Measures 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 On Weights and Measures rather than just read about it. In short: On Weights and Measures is a historical, lexical, metrological, and geographical treatise compiled in 392 AD in Constantia by Epiphanius of Salamis (c. 315–403). The greater part of the work is devoted to a discussion on Greek and Roman weights and measures.

Key takeaways

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

Reference excerpt

On Weights and Measures is a historical, lexical, metrological, and geographical treatise compiled in 392 AD in Constantia by Epiphanius of Salamis (c. 315–403). The greater part of the work is devoted to a discussion on Greek and Roman weights and measures. The composition was written at the request of a Persian priest, sent to Epiphanius by letter from the Roman emperor in Constantinople. Although five fragments of an early Greek version are known to exist, with one entitled Περὶ μέτρων καὶ στάθμων (transl. On Weights and Measures), added by a later hand, this Syriac version is the only complete copy that has survived. Partial translations in Armenian and Georgian are also known to exist. Its modern title belies its content, as the work also contains important historical anecdotes about people and places not written about elsewhere. Two manuscripts of On Weights and Measures, written in Syriac on parchment, are preserved at the British Museum in London. The older was found in Egypt and, according to the colophon, was written in the Seleucid era, in "nine-hundred and sixty-[...]" (with the last digit effaced, meaning, that it was written between the years 649–659 AD). The first to attempt a modern publication of Epiphanius' work was Paul de Lagarde in 1880, who reconstructed the original Syriac text by exchanging it with Hebrew characters, and who had earlier published excerpts from several of the Greek fragments treating on weights and measures in his Symmicta. In 1973, a critical edition of the Greek text was published by E.D. Moutsoulas in Theologia.

Synopsis

Part One In folios [54b–55c], Hadrian's journey and arrival in the East is dated "47 years after the destruction of Jerusalem."

Translations In folios [47a–49a]; [51d–52a]; [56d–57b] Epiphanius names four major translations of the Hebrew Bible, made in the Greek tongue: the LXX made by the seventy-two translators, another by Aquila of Pontus, one by Theodotion, and yet another by Symmachus. A fifth Greek translation was discovered in wine jars in Jericho, and a sixth in Nicopolis near Actium. Afterwards, Origen arranged six columns of the extant Greek translations and two of the Hebrew side by side, naming it the Hexapla. Epiphanius expands his description of the translation of the seventy-two translators (known as the Septuagint) and how they were assigned thirty-six cells, two to each cell, on the Pharian island. Two translators translated the Book of Genesis, another two the Book of Exodus, another two the Book of Leviticus, and so forth, until the entire 22 canonical books of the Hebrew Bible (today there are 24) had all been translated into the Greek tongue. The seventy-two translators were drawn from the twelve tribes of Israel, six men to each tribe who were skilled in the Greek language. In folios [49a–50a] Epiphanius gives a description of the canonical books of the Hebrew Bible and translations made of the same. In his day, he notes that the Scroll of Ruth and the Book of Judges were joined together, and considered as one book. So, too, the Books of Ezra and Nehemiah were joined, and considered as one book, as were First and Second Chronicles (Paraleipomena) considered as one book, as were the First and Second Samuel (Book of First and Second Kingdoms) considered as one book, and the First and Second Kings (Book of Third and Fourth Kingdoms) considered as one book.

Part Two Prominent figures In spite of Epiphanius' interest in Jewish themes, his narrative often takes on a distorted and stereotypical view of Judaism. Still, he is an invaluable source on the lives of people and places that figure highly in Jewish lore. In folios [54a–55c]; [55c–55d] Epiphanius treats on the lives of two prominent persons who became proselytes to the Jewish religion; the one Aquila (known also as Onkelos) who was a relation of Hadrian, and whom he made the overseer of Jerusalem's rebuilding around 115 AD. The other person of interest who is described by him is Symmachus, also known as Sūmkos (Hebrew: סומכוס) in rabbinic literature. Symmachus is mentioned as belonging originally to the Samaritan nation, and is said to have converted to Judaism during the reign of Verus. He subsequently underwent a second circumcision and became a disciple of Rabbi Meir. Symmachus belonged to the fifth generation (165–200 CE) of Rabbinical teachers referred to in the text of the Mishnah. The Emperor Hadrian is said to have passed through Palestine while en route to Egypt, some 47 years after the destruction of Jerusalem.

Part Three Weights and Measures Folios [61d–73b] contain a treatise on the known weights and measures used in his day among the Hebrews, the Greeks and the Romans. He states the equivalent weights for the kab (cab), kor, the lethekh (Lethek), homer, bath, modius (Hebrew: seah = lit. "measure"), and mina (Hebrew: maneh), among others. Epiphanius, explaining the sense of certain obscure passages in the original Aramaic New Testament, writes: "The talent is called Maneh (mina) among the Hebrews," the equivalent of 100 denarii. In folios [62b–62c] Epiphanius distinguishes between "a handful" (Hebrew: מְלֹא כַף) in I Kings 17:12 and "a handful" (Hebrew: מְלֹא חֹפֶן) in Exodus 9:8 and Leviticus 16:12; in the former case it refers to only one handful, but in latter cases it refers to "a measure of two handfuls."

Part Four Geography of Palestine, Asia Minor and the Levant In folios [73b–75a] Epiphanius gives the names of several cities and places of renown, both in his time and in ancient times, such as: Mount Ararat (§ 61), Aṭaṭ (§ 62), or what is known as the "threshing floor of the thorn bush" (Hebrew: גרן האטד), and whose description echoes that of Rashi's commentary on Genesis 50:10, Abarim (§ 63); Aviʿazar (§ 68), or what is Eḇen haʿezer of I Samuel 4:1, said to be "fourteen [Roman] miles distant east and north of Eleutheropolis, in a valley"; Carmel (§ 77); Carmel of the sea (§ 78); Akko (§ 76); Anathoth (§ 66); Azekah (§ 64) - a city in whose time was called Ḥǝwarta; Bethel (§ 73); Ophrah (§ 67); Carthage (§ 79) - where the Canaanites had migrated from Phoenicia and who were called in his day Bizakanoi (scattered people); Rekem (§ 71), Jaffa (§ 75), Jerusalem (§ 74), et al.

Chronology of the Ptolemies

Chronology of the Roman emperors

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with On Weights and Measures

Start with the simplest possible case. Write down what On Weights and Measures 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 On Weights and Measures 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 On Weights and Measures 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 On Weights and Measures

In research
On Weights and Measures 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 On Weights and Measures 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
On Weights and Measures is common in secondary-school and first-year university syllabi. It links to neighbouring topics 4th-century books, 4th-century history books, Christian apologetic works, so understanding it makes those chapters shorter.
In everyday life
Look for On Weights and Measures 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 On Weights and Measures in 20 minutes

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

Frequently asked questions

What is On Weights and Measures in simple terms?

On Weights and Measures is a historical, lexical, metrological, and geographical treatise compiled in 392 AD in Constantia by Epiphanius of Salamis (c. 315–403). The greater part of the work is devoted to a discussion on Greek and Roman weights and measures.

Why does On Weights and Measures 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 On Weights and Measures?

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 On Weights and Measures.

Tags

  • 4th-century books
  • 4th-century history books
  • Christian apologetic works
  • Chronicles containing universal histories in Greek
  • Chronicles in Koine Greek
  • History of the Levant
  • Holy Land during Byzantine rule
  • Human-based units of measurement
  • Obsolete units of measurement
  • Regnal lists
  • Texts in Syriac
  • Textual scholarship

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