A monk erased a book by Archimedes and wrote prayers over it

The Monk Who Erased Archimedes: How a Particle Accelerator is Unraveling History

The Archimedes Palimpsest sits under plexiglass at the Field Museum in Chicago, as seen in a 1999 photo. A particle accelerator is being used to decipher parts of the 174-page text that have not yet been revealed through other technologies.Beth A. Keiser / AP

In a story that bridges ancient genius, medieval necessity, and cutting-edge technology, the long-lost writings of Archimedes, one of history's greatest mathematicians, are being revealed through the marvels of modern science. Astonishingly, these groundbreaking works were hidden for centuries beneath the prayers of a Christian monk who, in the Middle Ages, erased and repurposed the original text to create a prayer book.

This incredible rediscovery is being spearheaded by a team of scientists and historians using focused X-rays from a particle accelerator, uncovering secrets that lay dormant for nearly a millennium.

Pages from the Archimedes Palimpsest. Photograph: AP

The Hidden Legacy of Archimedes

Archimedes, the ancient Greek mathematician, physicist, and engineer, lived in the 3rd century BCE and left behind a legacy of intellectual achievements that continue to inspire modern science and engineering. Among his contributions are foundational principles in mathematics, physics, and engineering. However, much of his work was lost over time, with only fragments surviving through copies and translations.

One such fragment is the Archimedes Palimpsest, a 174-page manuscript that was copied by a scribe in the 10th century CE from Archimedes' original scrolls. This rare document contained groundbreaking treatises, including “Method of Mechanical Theorems” and “On Floating Bodies”, where Archimedes explored mathematical theorems and principles of flotation and gravity.

Yet, by the 12th century, parchment—crafted from scraped and dried animal skins—was a scarce and valuable commodity. In an era when practical concerns often overrode intellectual preservation, a monk scraped away the text of Archimedes' treatises and reused the parchment to create a prayer book, thereby transforming priceless scientific heritage into a palimpsest—a twice-used manuscript.

The Monk’s Work Revisited

Fast forward to the 20th century: the Archimedes Palimpsest surfaced at auction in 1998 and was purchased by an anonymous collector for $2 million. Recognizing its historical significance, the collector loaned the artifact to the Walters Art Museum in Baltimore, where it became the focus of the Archimedes Palimpsest Project. This initiative aimed to uncover the hidden layers of text and diagrams through advanced imaging techniques.

For over two decades, scholars have worked tirelessly to reveal roughly 80% of the palimpsest’s contents using ultraviolet and infrared imaging, as well as digital processing techniques developed for medical and space research. Yet, some pages remained undeciphered—until now.

The Particle Accelerator Breakthrough

In 2004, Stanford physicist Uwe Bergmann had a groundbreaking idea: use the Stanford Linear Accelerator Center (SLAC) to detect the iron content in the ink of the hidden text. Unlike imaging techniques that rely on visible light, this method uses highly focused X-rays generated by electrons traveling at near-light speeds. The X-rays cause the iron in the ink to fluoresce, effectively illuminating the hidden text.

"Anything which contains iron will be shown, and anything that doesn't contain iron will not be shown," Bergmann explained. This technique allows scientists to peer beneath the overwritten layers and recover text that had been considered permanently erased.

What Lies Beneath: Archimedes’ Timeless Insights

So far, the Archimedes Palimpsest has yielded discoveries that deepen our understanding of ancient science. It contains the only known copies of “Method of Mechanical Theorems”, where Archimedes describes how mechanical experiments inspired his mathematical insights. This treatise is considered a precursor to integral calculus.

The palimpsest also includes the original Greek text of “On Floating Bodies,” where Archimedes explored the principles of buoyancy—work that laid the groundwork for modern fluid mechanics.

For historians and mathematicians, this manuscript is invaluable not only for its content but also for its diagrams. "It's the only one that contains diagrams that may bear any resemblance to the diagrams Archimedes himself drew in the sand in Syracuse 2,000 years ago," said William Noel, head of the Archimedes Palimpsest Project.

The Road Ahead

The particle accelerator has already unveiled three previously unread pages, and the remaining sections are expected to take another three to four years to decipher. Each newly uncovered passage offers a glimpse into Archimedes' unmatched brilliance and the ancient world’s intellectual pursuits.

As for the monk who erased the text, his actions, though frustrating to modern scholars, were born of necessity in a time when parchment was a precious resource. Ironically, his prayer book inadvertently preserved the text for posterity, allowing modern technology to resurrect Archimedes’ genius.

From Ancient Genius to Modern Marvels

The Archimedes Palimpsest is a testament to humanity’s enduring quest for knowledge. From the sands of Syracuse to the beams of a particle accelerator, the journey of Archimedes' writings is as extraordinary as the man himself. Thanks to cutting-edge science and the dedication of scholars, the lost works of this ancient luminary are finally seeing the light of day, reminding us of the fragile yet resilient nature of intellectual heritage.

The 800 Women Who Shaped French Canada: Are You Descended from the Filles du Roi?

Most French Canadians Are Descended from the Filles du Roi: The Remarkable Story of New France's Pioneer Women

If you have French-Canadian ancestry, there’s a good chance your family tree includes at least one fille du roi—or perhaps even dozens. These women, whose title translates to "Daughters of the King," played a pivotal role in shaping the population of New France, the territory now known as Québec. Intriguingly, several filles du roi have documented genealogical lines tracing back to Charlemagne and other European royals, making many modern French Canadians direct descendants of these illustrious figures.

Who Were the Filles du Roi?

The filles du roi were young French women who emigrated to New France between 1663 and 1673 under a program initiated by King Louis XIV. The king's goal was clear: to encourage settlement, promote marriages, and boost population growth in the fledgling colony. At the time, New France was sparsely populated and predominantly male. Early settlers included fur trappers, priests, soldiers, and adventurers, but the lack of French women created social and demographic challenges.

As Jesuit priests discouraged intermarriage with the non-Christian native population, and many French women were reluctant to face the harsh conditions of the New World, the gender imbalance worsened. This situation was exacerbated in 1665 when 1,200 soldiers of the Carignan-Salières Regiment arrived to defend the colony. While most soldiers returned to France after securing a peace treaty with the Iroquois in 1667, approximately 400 young men stayed behind, further increasing the colony’s male-to-female ratio.

A Bold Plan to Populate the Colony

Recognizing the dire need for women, Intendant Jean Talon proposed recruiting young women to settle in New France. King Louis XIV approved the plan and financed the emigration of nearly 800 women. These filles du roi were carefully selected, with most between the ages of 12 and 25. Candidates were required to present letters of reference, often from their parish priests, verifying their good moral character.

While some of these women came from impoverished backgrounds and lacked dowries—making them unlikely candidates for marriage in France—others were the younger daughters of wealthier families, including some with noble or royal lineage.

Life as a Fille du Roi

Upon arrival in Québec, Trois-Rivières, or Montréal, the filles du roi faced swift courtship. Many married within days or weeks of disembarking, with local men eager to secure a wife. The King provided each woman with a dowry that typically included practical household items such as needles, thread, scissors, knives, a comb, a bonnet, and even livestock like chickens or pigs. The dowry’s symbolic two silver livres cemented their title as "Daughters of the King."

These women were instrumental in building families and communities. Most had large families, often with 10 or more children, which contributed to the exponential growth of the population. Their descendants number in the millions today, spread across Canada, the United States, and beyond.

Where Did the Filles du Roi Come From?

Most filles du roi originated from regions like Paris, Normandy, and Western France. However, some came from farther afield, including rural areas and other European countries. Historical records even mention individuals of diverse backgrounds, including a Moor of African descent, a Portuguese woman, and women of German and Dutch origins.

Royal Connections

While many filles du roi came from humble beginnings, some had noble ties. One of the most well-documented examples is Catherine de Baillon, whose lineage traces back to Charlemagne and other European royals. Her ancestry exemplifies the connection between the filles du roi and the royal families of Europe.

A Lasting Legacy

The filles du roi left an indelible mark on the history and culture of Québec and French Canada. They not only helped stabilize the population but also established a strong French-Canadian identity that persists today. Their resilience, courage, and adaptability remain a source of pride for their countless descendants.

For those interested in exploring their genealogical ties to the filles du roi, comprehensive resources, including alphabetical lists of the women and their husbands, can be found online. Websites such as fillesduroi.org provide extensive details about these pioneering women, their backgrounds, and their contributions to history.

An alphabetical listing of all the known Filles du Roi and their husbands is available at https://fillesduroi.org/cpage.php?pt=9.

Whether you descend from Catherine de Baillon or another fille du roi, their legacy reminds us of the extraordinary courage it took to forge a new life in the wilderness of New France.