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Student Artwork Guide

Longcase equation clock

Name Class Date

Ferdinand Berthoud, Longcase equation clock (1755), Royal Collection. Public domain.

The facts

Artist
Ferdinand Berthoud wahooart.com/en/artists/ferdinand-berthoud/
Artist’s dates
1727 – 1807
Painted
1755
Medium
Oil On Canvas
Original size
36 x 35 cm
Movement
Rococo Light, playful, pastel-coloured pictures of leisure, made for private rooms rather than public halls.
Held at
Royal Collection wahooart.com/en/museums/royal-collection-london/
Artistic style
Rococo
Influences
French horology
Notable elements
Engraved bronze dial
Subject or theme
Timekeeping, Astronomy

In context

Longcase equation clock — Ferdinand Berthoud

How big is it?

The original measures 36 × 35 cm (height × width), drawn here beside an adult of average height.

When was this painted?

  1. 1720
  2. 1730
  3. 1740
  4. 1750
  5. 1760
  6. 1770
  7. 1780
  8. 1790
  9. 1800

Shaded: the lifetime of Ferdinand Berthoud (1727–1807) ▲ this work, 1755

Colours

Measured from the image

    Main colour

    Rosy Brown #a6aaac

    Catalogued palette

    • #A6AAAC
    • #492D1E
    • #AD873C
    • #798184
    Palette
    Earthy The dominant colour family in the image.
    Main colour name
    Rosy Brown
    Intensity
    Monochromatic How saturated and varied the colours are, from a single toned-down hue to many bright ones.
    Contrast
    Balanced How much the colours differ in lightness and saturation across the picture.
    Harmony
    Softly Mixed Palette How well the colours work together, from clashing to fully unified.
    Brightness
    Bright How light or dark the picture reads overall, from deep shadow to bright highlight.
    Saturation
    Muted How pure and strong the colours are, from near-grey to fully vivid.

    About this artwork

    Longcase equation clock — Ferdinand Berthoud

    A Celestial Dance: Unveiling the Longcase Equation Clock

    The French longcase equation clock presented here is more than a mere timekeeper; it’s a miniature universe, a testament to 18th-century scientific ambition and exquisite craftsmanship. Crafted in 1755 by Ferdinand Berthoud, a name synonymous with precision and innovation in horology, this remarkable piece transcends the functional, becoming a captivating work of art that speaks volumes about the intellectual currents of its time.

    Berthoud’s genius lay not just in assembling gears and springs, but in understanding the complex relationship between time and the cosmos. He sought to reconcile the imperfect measurements of local sundials with the steady march of the solar year, creating a clock that displayed both the standard hours and the true, astronomical time – a feat considered revolutionary for its day. This ambition is immediately apparent in the clock’s dual faces: one meticulously marking the familiar twelve-hour cycle, the other presenting a more sophisticated representation of the solar day, complete with indications of leap years and the solstices and equinoxes.

    A Cabinet of Wonders: The Case's Baroque Splendor

    The clock’s case is a masterpiece in itself, a lavish display of marquetry and gilded ornamentation executed by Charles Cressent, a renowned cabinet-maker and sculptor. The intricate inlay work depicts a vibrant scene – cherubs playfully scattering fruit amongst lions’ heads, all set against a backdrop of stylized foliage and floral motifs. This opulent design reflects the prevailing Rococo style, characterized by its exuberance, asymmetry, and playful use of ornamentation. The claw feet, rising gracefully upwards, add to the piece's aristocratic charm.

    Beyond the decorative elements, the case’s construction reveals a remarkable level of skill. The shaped upright form is not merely aesthetic; it was designed to maximize space for the intricate movement within. Cressent’s mastery is evident in the seamless integration of the marquetry with the surrounding wood, creating a harmonious and visually stunning whole.

    The Heart of Innovation: Berthoud's Revolutionary Movement

    At the heart of this clock lies Berthoud’s groundbreaking equation movement. This ingenious mechanism, meticulously crafted by B.L. Vulliamy in 1821, calculates the true solar time and displays it alongside the standard hours. The complexity is astounding – a network of gears, wheels, and levers working in perfect synchronicity to achieve this feat of engineering. The clock’s dial itself is a testament to Berthoud's scientific mind, incorporating astronomical indicators that reveal the positions of the sun and moon at any given time.

    It’s important to note that Berthoud’s work extended far beyond this single clock. He was instrumental in developing marine chronometers – essential instruments for navigation at sea – and authored numerous scientific treatises on horology, solidifying his reputation as a leading figure in the field. His contributions were recognized by the Royal Society of London, where he was elected a Fellow in 1764.

    A Legacy of Precision and Beauty

    The Longcase Equation Clock is more than just an antique; it’s a tangible link to a pivotal moment in scientific history. It embodies the Enlightenment spirit of inquiry, combining artistic beauty with intellectual rigor. Its intricate design, masterful craftsmanship, and revolutionary mechanics make it a truly exceptional piece – a captivating reminder of the ingenuity and artistry that flourished during the 18th century. Reproductions capture some of this magic, offering a way to bring this remarkable clock into any home or collection.

    Artist and museum

    Artist

    Ferdinand Berthoud

    Born in Planchonvillers, Switzerland

    Early Life and Career

    Born: March 18, 1727, in Plancemont-sur-Couvet, Principality of Neuchâtel (now part of Switzerland)

    Died: June 20, 1807, in Groslay, Val d'Oise, France

    Ferdinand Berthoud was born into a family of watchmakers, fostering an early interest in horology.

    He began his apprenticeship at a young age and demonstrated exceptional skill.

    In 1753, he became a master watchmaker in Paris, marking the beginning of his professional career.

    Berthoud held the prestigious position of Horologist-Mechanic by appointment to the King and the Navy.

    Notable Works and Contributions

    Marine Chronometers: Berthoud is most renowned for his groundbreaking work on marine chronometers, essential tools for navigation at sea. He significantly improved their accuracy and reliability.

    Longcase Equation Clock: A notable creation demonstrating his mastery of clockmaking techniques and astronomical calculations.

    Scientific Treatises: Berthoud authored extensive treatises on horology, contributing to the theoretical understanding of timekeeping. These included "L’Art de conduire et de régler les pendules et les montres" and "Essai sur l'horlogerie."

    Innovation in Escapements: He explored and refined escapement mechanisms crucial for precise time measurement.

    Examination of John Harrison's H4: In 1763, Berthoud was commissioned to examine John Harrison’s H4 Marine Timekeeper, further contributing to the advancement of chronometry.

    Scientific Significance and Recognition

    Impact on Navigation: Berthoud's marine chronometers revolutionized sea navigation by providing a more accurate means of determining longitude.

    Fellow of the Royal Society: He was elected as a foreign associate member of the Royal Society in London (1764), recognizing his scientific contributions.

    Member of the Institute of France: His expertise earned him membership in the prestigious Institute of France.

    Influence on Horology: Berthoud's work significantly influenced the development of horology and precision timekeeping instruments.

    Published Works: His publications, including his treatises on horology, were widely translated and reprinted, disseminating knowledge and advancing the field.

    Legacy and Impact

    Pioneer in Chronometry: Ferdinand Berthoud is considered a pioneer in chronometry, contributing significantly to the development of accurate timekeeping devices.

    Advancement of Scientific Knowledge: His writings and research expanded scientific understanding of horology and its applications.

    Enduring Influence on Watchmaking: His legacy continues to inspire watchmakers and scientists today.

    Museum Collections: Berthoud's timepieces are preserved in museums worldwide, including the Musée d’Art et d’Histoire Neuchâtel, showcasing his craftsmanship and innovation.

    AllPaintingsStore.com: His work is featured on AllPaintingsStore.com, preserving and promoting his artistic and scientific contributions.

    Museum

    Royal Collection

    On show in London, United Kingdom

    A Legacy of Majesty: Exploring The Royal Collection

    Within the venerable walls of Buckingham Palace and scattered across thirteen historic residences throughout the United Kingdom lies a treasure unlike any other – The Royal Collection. More than simply a museum, it’s a living chronicle of British monarchy, an intimate reflection of over eleven centuries of royal tastes, ambitions, and artistic patronage. This extraordinary assemblage, encompassing paintings, sculptures, furniture, textiles, and countless decorative arts, offers visitors an unparalleled journey through time, architecture, and the very heart of British cultural heritage. It's a testament to the enduring power of royal influence, meticulously curated and preserved as a legacy for generations to come.

    The story begins in earnest with Henry VIII, a man driven by a profound fascination with beauty and an unwavering determination to amass a remarkable array of artistic treasures. His reign marked the initial blossoming of what would become this monumental collection, fueled by ambitious commissions and a desire to showcase royal power. Considered a Renaissance patron at heart, Henry’s tastes leaned heavily towards Italian masters – Botticelli, Leonardo, and Raphael were all highly prized additions to his burgeoning collection. This early enthusiasm was further cultivated during Charles I's reign, whose decisive acquisition of the Gonzaga collection from Mantua cemented Italy’s profound influence on British artistic sensibilities – introducing a vibrant palette, dynamic compositions, and a focus on classical ideals that profoundly shaped subsequent generations of British artists. The sale of his remaining artworks after his execution, while heartbreaking, was strategically executed to ensure their preservation for posterity, fostering continued scholarly study and safeguarding these masterpieces from potential destruction.

    Today, The Royal Collection boasts an astonishing breadth of artistic talent, encompassing not only individual masterpieces but also a vast array of decorative arts. Intricately crafted furniture, opulent tapestries depicting scenes from mythology and history – often commissioned to commemorate momentous occasions – and dazzling collections of jewels all contribute to this unparalleled assemblage. These objects weren’t simply adornments; they were deliberately chosen to express royal authority, celebrate dynastic achievements, and reinforce the image of a powerful and enduring monarchy. Beyond the individual works themselves, consider the architectural context—each palace and residence is an integral part of the narrative, reflecting changing tastes and technological advancements over centuries. From the Tudor magnificence of Hampton Court Palace’s halls – a tangible reminder of Henry VIII's grandeur, with its vast Great Hall echoing with the sounds of courtly life – to the Georgian formality of Kensington Palace, each space has been thoughtfully adapted to complement and enhance the artworks housed within, creating an immersive environment that transcends mere visual appreciation. The spaces themselves are as much a part of the story as the objects they contain.

    Iconic Masterpieces: A Glimpse into Artistic Genius

    The Royal Collection is home to some of the world’s most celebrated works of art, each a testament to the artistic genius of its creator. Leonardo da Vinci's

    Study for an Equestrian Monument

    offers a rare glimpse into the mind of one of history’s greatest innovators – a preparatory sketch brimming with meticulous anatomical detail and reflecting his groundbreaking approach to artistic representation. Michelangelo’s

    The Risen Christ

    , embodying the artist’s unparalleled mastery of human form and conveying profound spiritual significance, stands as a monumental achievement of Renaissance sculpture; its sheer scale and emotive power are truly breathtaking. The bronze sculptures of Donatello – testaments to the enduring craftsmanship of the Italian Renaissance – invite contemplation on themes of humanity and faith, their surfaces worn smooth by centuries of observation. Rembrandt's portraits capture intimate glimpses into the lives of prominent figures, showcasing his masterful use of light and shadow and reflecting the stylistic hallmarks of his era; each brushstroke revealing a profound understanding of human psychology. And Van Dyck, Charles I’s personal painter, produced canvases that epitomized Baroque elegance and sophistication, capturing the regal bearing and refined tastes of the King – portraits that are not merely representations but windows into a world of courtly intrigue and artistic patronage.

    Beyond the Canvas: A Journey Through Royal Residences

    Exploring The Royal Collection is not a singular experience; it's a journey through thirteen royal residences, each offering a distinct perspective on its holdings and the tastes of successive monarchs. Hampton Court Palace, with its magnificent Tudor architecture and sprawling gardens – a tangible reminder of Henry VIII’s grandeur, with its vast Great Hall echoing with the sounds of courtly life – provides a captivating window into the era. Windsor Castle, the largest occupied castle in the world, showcases how artistic sensibilities evolved throughout subsequent reigns, reflecting changing fashions and cultural influences; from the opulent state apartments to the intimate private chambers, each room tells a story of royal life. Kensington Palace, once inhabited by generations of royals, houses a remarkable collection of portraits and decorative arts that illuminate the lives of British monarchs – offering glimpses into their personal passions and political strategies. Buckingham Palace itself, now home to King’s Gallery, presents a carefully curated selection of masterpieces for public viewing – a testament to the enduring legacy of royal patronage.

    A Living Legacy: Preservation and Engagement

    The Royal Collection Trust actively engages visitors with its holdings through compelling exhibitions that explore pivotal moments in art history and British cultural heritage. "The Edwardians: Age of Elegance” captivated audiences with its exploration of the opulent style and artistic sensibilities prevalent during the early 20th century, mirroring the grandeur of the palaces themselves. Similarly, "Drawing the Italian Renaissance" showcased exquisite drawings by masters like Leonardo da Vinci and Michelangelo – demonstrating how artistic inspiration traversed continents and shaped artistic practice. Current exhibitions continue to delve into specific themes and periods within the Collection’s vast holdings, offering fresh perspectives on these iconic works and ensuring that the legacy of royal patronage remains vibrant and accessible to all. The Trust's commitment extends beyond static displays, with ongoing efforts to digitize the collection and make it available to a global audience through online resources and virtual tours.

    Where to read more

    Find this online

    QR code linking to the download page for Longcase equation clock

    wahooart.com/en/art/download/ferdinand-berthoud-longcase-equation-clock-D3WHRF-en/

    Cite this artwork

    MLA
    Berthoud, Ferdinand. Longcase equation clock. 1755, Royal Collection. https://wahooart.com/en/art/ferdinand-berthoud-longcase-equation-clock-D3WHRF-en/
    APA
    Berthoud, Ferdinand (1755). Longcase equation clock [Painting]. Royal Collection. https://wahooart.com/en/art/ferdinand-berthoud-longcase-equation-clock-D3WHRF-en/
    Chicago
    Ferdinand Berthoud. Longcase equation clock. 1755. Royal Collection. https://wahooart.com/en/art/ferdinand-berthoud-longcase-equation-clock-D3WHRF-en/
    Harvard
    Berthoud, Ferdinand (1755) Longcase equation clock. Royal Collection. Available at: https://wahooart.com/en/art/ferdinand-berthoud-longcase-equation-clock-D3WHRF-en/

    Look closely

    Longcase equation clock — Ferdinand Berthoud

    Look closely

    Answer in your own words. There are no wrong answers here — only answers you can explain.

    1. What catches your eye first, and why?
    2. Which colours or shapes create the mood — and what is that mood?
    3. Our catalogue files this work under: clockmaking, astronomical, timekeeping. Do you agree? What would you add, or take away?
    4. Rococo: Light, playful, pastel-coloured pictures of leisure, made for private rooms rather than public halls. Where can you see that in this work?
    5. Ferdinand Berthoud was about 28 when this was made. What in it looks like the work of an artist at that stage?

    Your response

    Write a short paragraph about this artwork. Use the facts from the earlier parts of this guide, and your answers above.

    Art quiz

    Longcase equation clock — Ferdinand Berthoud

    How well do you know this artwork?

    Tick one answer for each of the 5 questions below. Each has exactly one correct answer.

    1. 1. What is the primary subject depicted in Ferdinand Berthoud’s ‘Longcase Equation Clock’?

      • A A portrait of King Louis XV
      • B A complex astronomical clock displaying both solar and lunar time
      • C A decorative panel inlaid with floral motifs
    2. 2. The ‘Longcase Equation Clock’ is notable for its inclusion of which innovative feature?

      • A A miniature automaton depicting a mythological scene
      • B An equation movement that calculates the time based on solar observations
      • C A series of rotating dials displaying constellations
    3. 3. Who is credited with the intricate case design of the ‘Longcase Equation Clock’?

      • A Ferdinand Berthoud
      • B Charles Cressent
      • C Pierre Le Roy
    4. 4. In what year was the ‘Longcase Equation Clock’ created?

      • A 1750
      • B 1765
      • C 1755
    5. 5. The clock's design reflects the influence of which artistic movement?

      • A Baroque
      • B Rococo
      • C Neoclassical

    My score: ____ out of 5

    Answer key — for the teacher

    This starts a fresh printed page, so it can simply be left out of the copies.

    1A · 2A · 3A · 4C · 5A