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Westminster Quarters

Westminster Quarters 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 Westminster Quarters rather than just read about it. In short: The Westminster Quarters, from its use at the Palace of Westminster, is a melody used by a set of four quarter bells to mark each quarter-hour. It is also known as the Westminster Chimes, Cambridge Quarters, or Cambridge Chimes, from its place of origin, the Church of St Mary the Great, Cambridge.

Westminster Quarters — main illustration
Westminster Quarters — illustration

Key takeaways

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

Reference excerpt

The Westminster Quarters, from its use at the Palace of Westminster, is a melody used by a set of four quarter bells to mark each quarter-hour. It is also known as the Westminster Chimes, Cambridge Quarters, or Cambridge Chimes, from its place of origin, the Church of St Mary the Great, Cambridge.

Description

The Westminster Quarters are sounded by four quarter bells hung around Big Ben in the Elizabeth Tower belfry, in the Palace of Westminster. These are:

The quarters consist of five changes, permutations of the four pitches provided by these quarter bells (G♯4, F♯4, E4, B3) in the key E major. This generates five unique changes as follows:

G♯4, F♯4, E4, B3 E4, G♯4, F♯4, B3 E4, F♯4, G♯4, E4 G♯4, E4, F♯4, B3 B3, F♯4, G♯4, E4 Each of the five changes is played as three crotchets (quarter notes) and a minim (half note) and are always played in the sequence 1, 2, 3, 4, 5. This sequence of five changes is used twice every hour as follows:

The number of changes used matches the number of quarter hours passed. Because the five changes are used twice, and in the same sequence, the mechanism that trips the hammers needs to be programmed with only five changes instead of ten, reducing its complexity. Both the third quarter and the full hour require the fourth quarter bell, B3, to be rung twice in quick succession (changes 4,5,1 and 2,3,4,5); too quick for the hammer to draw back for the second strike. To address this, the fourth quarter bell is equipped with two hammers on opposite sides and becomes, effectively, a fifth bell for the mechanism to play. The first and third quarters finish on the dominant, B, while the half and full hours finish on the tonic, E, producing the satisfying musical effect that has contributed to the popularity of the chimes. The following sounds have been recreated as MIDI electronic files and do not necessarily represent the actual sounds of the bells and that the pitch of the Big Ben clip is closer to F than E in modern concert pitch. An actual recording may be heard in the summary section above.

Words associated with the melody The prayer inscribed on a plaque in the Big Ben clock room reads:

The conventional prayer is:

An alternative prayer changes the third line:

A variation on this, to the same tune, is prayed at the end of Brownie meetings in the UK and Canada:

History

The Westminster Quarters were originally written in 1793 for a new clock in Great St Mary's, the University Church in Cambridge. There is some doubt over exactly who composed it: Joseph Jowett, Regius Professor of Civil Law, was given the job, but he was probably assisted by either John Randall (1715–1799), who was the Professor of Music from 1755, or his undergraduate pupil, William Crotch (1775–1847). This chime is traditionally, though without substantiation, believed to be a set of variations on the four notes that make up the fifth and sixth bars of "I know that my Redeemer liveth" from Handel's Messiah. This is why the chime is also played by the bells of the so-called Red Tower in Halle, the native town of Handel. In 1851, the chime was adopted by Edmund Beckett Denison (an amateur horologist, and graduate of Trinity College, Cambridge, who was familiar with the Great St Mary's chime) for the new clock at the Palace of Westminster, where the bell Big Ben hangs. From there its fame spread. It is now one of the most commonly used chimes for striking clocks. According to the church records of Trinity Episcopal Church (Williamsport, Pennsylvania), this chime sequence was incorporated into a tower clock mechanism by E. Howard & Co., Boston, Massachusetts. The clock and chime in Trinity's steeple base was dedicated in December 1875. It holds the distinction of being the first tower clock in the United States to sound the Cambridge Quarters.

Other uses

… excerpt ends here. Continue reading the full article.

Illustrations

Westminster Quarters: The quarter bells shown hung around Big Ben, December 1858
The quarter bells shown hung around Big Ben, December 1858
Westminster Quarters: The Elizabeth Tower at the Palace of Westminster, the namesake of the chime
The Elizabeth Tower at the Palace of Westminster, the namesake of the chime
Westminster Quarters: The Church of St Mary the Great, Cambridge for which the chime was written
The Church of St Mary the Great, Cambridge for which the chime was written

Worked examples

Example 1 — a first encounter with Westminster Quarters

Start with the simplest possible case. Write down what Westminster Quarters 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 Westminster Quarters 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 Westminster Quarters 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 Westminster Quarters

In research
Westminster Quarters 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 Westminster Quarters 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
Westminster Quarters is common in secondary-school and first-year university syllabi. It links to neighbouring topics Anonymous musical compositions, Clocks, so understanding it makes those chapters shorter.
In everyday life
Look for Westminster Quarters 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 Westminster Quarters in 20 minutes

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

Frequently asked questions

What is Westminster Quarters in simple terms?

The Westminster Quarters, from its use at the Palace of Westminster, is a melody used by a set of four quarter bells to mark each quarter-hour. It is also known as the Westminster Chimes, Cambridge Quarters, or Cambridge Chimes, from its place of origin, the Church of St Mary the Great, Cambridge.

Why does Westminster Quarters 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 Westminster Quarters?

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 Westminster Quarters.

Tags

  • Anonymous musical compositions
  • Clocks

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