Kollegala Sharma is a renowned science communicator and prolific Kannada writer, celebrated for making science accessible through articles, books, radio dramas, podcasts, and translations. A former chief scientist at CSIR-CFTRI Mysore, he has received prestigious awards for his exceptional contributions, including pioneering India’s first Kannada science podcast and editing the state’s popular science magazine, Kutuhali.
In this conversation (in English), we discuss what motivates him to do what he does so well…communicate science…
Shivprasad Patil is a Professor in the Department of Physics at the Indian Institute of Science Education and Research (IISER) Pune.
His main academic interests include nanotechnology, atomic force microscopy, and single-molecular interactions. His research centers on experimental nanomechanics and force spectroscopy, especially for probing phenomena at the single-molecule level.
In this conversation, we explore his intellectual journey from a small village in Maharashtra to a professor at IISER Pune
My guest this time is Professor Robert T. Pennock, University Distinguished Professor at Michigan State University, with appointments in Lyman Briggs College, the Department of Philosophy, and the Department of Computer Science and Engineering: https://pennock5.msu.domains/
Robert’s research explores the deep connections between science, ethics, and philosophy. His recent book, An Instinct for Truth, presents science as a moral discipline grounded in intellectual virtues like honesty, curiosity, and humility.
At the BEACON Center for the Study of Evolution in Action, he leads interdisciplinary work on digital evolution, using artificial life systems to explore questions about complexity, adaptation, and the evolution of intelligent behavior.
In this episode, we explore his intellectual journey with an emphasis on philosophy of science.
Miller, Jon D, Belén Laspra, Carmelo Polino, Glenn Branch, Mark S Ackerman, and Robert T Pennock. 2024. “Citizen Attitudes toward Science and Technology, 1957–2020: Measurement, Stability, and the Trump Challenge.” Science and Public Policy 51 (3): 526–42. https://doi.org/10.1093/scipol/scad086.
In this episode, we discuss Shubashree’s journey from earning a PhD in physics to building a career in science journalism. She talks about her experiences writing for The Hindu and her current role as Associate Editor at IIT Madras’ Shaastra magazine. As a national award-winning journalist, Shubashree shares insights into making scientific ideas accessible to a wider audience, the challenges she has faced in the field, and her advice for aspiring science writers. This conversation explores her career transition, the role of science communication, and the importance of clarity in sharing scientific knowledge.
The Greco-Roman era, which extended across various parts of Europe and Egypt, had a profound influence on the development of knowledge and architectural construction. During this period, there was a notable interaction between manual labor and intellectual inquiry, culminating in the emergence of mechanics as a significant domain of human knowledge. While written texts often addressed mechanics from an abstract perspective, construction activities and the use of small machines embodied their practical applications.
Take, for example, the lever: a device with direct, practical utility in a wide range of contexts. A deeper exploration of such a device reveals foundational concepts in mechanics and mechanical engineering. This established an important two-way relationship between abstract theory and practical implementation, a mode of thinking most clearly exemplified in the works of Hero of Alexandria.
Hero’s writings were closely linked to mechanics and mechanical engineering[1], and the knowledge he produced spread across Europe and the Arabic world. He was deeply influenced by Archimedes, frequently referencing his works across multiple treatises. In doing so, Hero consolidated earlier knowledge and repurposed it for a variety of mechanical applications. He is also credited with creating what is now considered one of the earliest forms of the steam engine using a simple pneumatic device[2].
He was also indirectly influenced by Aristotelian thought; traces of Aristotle’s Mechanica can be observed in Hero’s approach and conceptual framework. A central feature of Hero’s work lies in the foundational principles through which he analyzed mechanical devices. Specifically, he focused on five fundamental mechanical elements: the wheel and axle, lever, pulley, wedge, and screw. Hero sought to relate these devices to a core geometrical principle: the circle, and further connected them to the concept of balance. This integration of geometric abstraction with practical devices was at the heart of Hero’s methodology, making him one of the earliest thinkers to approach mechanics as both a physicist and an engineer.
Another significant aspect of his work is his use of models[1], which provided new insights into the operation and design of mechanical systems. During that period, understanding how large weights could be moved using relatively small forces, such as through the use of a lever, posed a conceptual and practical challenge. Addressing this challenge led to deeper investigations into balance and the principles underlying mechanical advantage.
At the center of these intellectual developments was Hero of Alexandria. His work exemplifies the dual nature of mechanics as both an intellectual pursuit and a practical tool. Hero’s influence helped shape the treatment of mechanics as a cornerstone of ancient scientific and technological achievement. In many ways, he unified physics and technology on a single conceptual platform, offering a distinctive way of understanding natural phenomena and applying that understanding toward practical ends.
2. About Hero – Hero’s Time and Place
Let us now examine the details concerning Hero of Alexandria. As with many ancient historical figures, it is quite difficult to determine the exact dates of his life[3]. However, there is a general scholarly consensus that he lived sometime between the 1st and 2nd centuries CE in the city of Alexandria, located in present-day Egypt.
During this era, Alexandria was under the rule of Greek authorities, and the period is typically characterized by Greco-Roman influence, often referred to as the Hellenistic period. Interestingly, one of the methods by which Hero’s era has been dated involves a lunar eclipse recorded in his book Dioptra. This particular eclipse occurred on March 13, 62 CE, and scholars think[3] this observation provides a useful temporal marker for situating Hero in history.
Little is known about his personal life, aside from the fact that he lived and worked at the University of Alexandria. This conclusion is largely inferred from the numerous books he authored, which correspond closely with the scientific and technological knowledge of that time. With regard to intellectual influences, it is clear from his writings that Hero received a thorough education in Greek literature available up to that period.
In particular, his works frequently reference those of Archimedes. There is also an indirect influence of Aristotelian thought, although explicit references to Aristotle are less common than those to Archimedes. It is important to note that Archimedes’ contributions had a profound influence on scientific thought for generations, and Hero of Alexandria was no exception.
What is particularly fascinating about Hero is that he not only demonstrated a deep understanding of Archimedean work but also possessed considerable knowledge of devices and simple machines available in his time[4]. Alongside these intellectual currents, Hero was also influenced by Ctesibius of Alexandria. His writings exhibit a connection to this earlier Greek scholar, and some scholars even speculate that Hero may have been a student of Ctesibius.
It is worth noting that the transmission of influence from older scholars to later ones was largely facilitated through published works. Given that the University of Alexandria was a renowned center of learning, it is unsurprising that Hero of Alexandria was familiar with the work of many earlier scholars.
3. His Books – Hero’s Published Works
From the existing literature, Hero of Alexandria is associated with fourteen texts, of which eight are directly attributed to him, while six other works are associated with him with less certainty[1]. Among these works, his books on Pneumatica, Metrica, and Mechanics have garnered significant attention. In the context of Pneumatica, the subject pertains to the pressure of air, water, and steam, and their applications for various purposes, including entertainment.
Mechanica, of course, covers simple devices and machines, and this work is primarily preserved in the Arabic language. It is generally attributed to a few scholars from a later period. There is also an interesting piece of work titled Automata, in which automatic machines of that time are discussed in the context of mechanics and the associated engineering. It is the Metrica that is associated with the calculation of volumes of various solids and certain planes and surfaces, which has drawn considerable attention and has become a well-known source of information.
Of course, Hero also worked on war machines, and this particular work is available in Greek. The lifting of weights was a major technical challenge during that era, and Hero of Alexandria naturally approached this problem from the standpoint of mechanics. Many of his works, including Pneumatica and Mechanica, contain elaborate discussions on various forms of weights and the techniques for lifting them.
This, obviously, is associated with the engineering tasks necessary for constructing the architectural works of that period. Another interesting aspect of Hero’s work is associated with geometry, especially through the work titled Geometrica. He also investigated calculations related to three-dimensional objects, which show a close connection to measurement principles relevant not only to devices but also to surveying landscapes and measuring distances, including those associated with human constructions such as tunnels.
There are a few works associated with definitions of mathematical entities, and their attribution remains debated. Nevertheless, all this evidence indicates a prolific intellectual life of Hero of Alexandria, and many scholars attribute this productive authorship to his position as a teacher at the University of Alexandria. For example, if one examines certain works such as Pneumatica, the instructional style in such books appears to resemble manuals for students to gain an overview of devices.
Also, the discussions are not very terse, and many scholars interpret this as a recap for students who are advancing their knowledge in mechanics and related problems. It is noteworthy that the entire body of work suggests that Hero of Alexandria not only had a strong command over mechanical machines but also possessed the ability to think in abstract terms. This is evident from his writings related to mathematics.
Such a combination of application and abstraction is one of the most significant features of Hero of Alexandria.
4. Pneumatica
Now let us look at some specific works of Hero of Alexandria, beginning with Pneumatica. The word pneuma means “wind” in Greek. The adjective essentially refers to something that contains or operates using air or gas under certain pressure. In this context, Hero’s Pneumatica describes various aspects related to the utility of air and gases for mechanical motion.
Figure 1 Drawing of an Aeolipile
The theme of this work is fascinating because it is not an abstract or purely theoretical exposition on mechanics or mechanical engineering. Rather, it is directly connected to small devices used for a variety of purposes, including entertainment. Among these are descriptions of several toys, such as birds that sing, coin-operated machines, and what is probably the first vending machine recorded in literature[2].
Among the many devices discussed, the one that has particularly captured the attention of historians of science is a device called the aeolipile[2], [5]. This is considered a prototype of the earliest steam engine. It operates using steam generated by boiling water in a kettle. The kettle is connected to a sphere with two nozzles. When the water boils, the steam enters the sphere and causes it to rotate.
The key aspect of this design is that the sphere is connected to a horizontally placed shaft. As the steam exits the nozzles, it causes the sphere to spin, thereby converting thermal energy into mechanical motion. This device has drawn the interest of many historians studying the origins of steam engines, as it represents one of the earliest known examples of thermal-to-mechanical energy conversion[2], [5].
The book itself contains fascinating descriptions of miniature devices adapted for various uses, including magic shows and theatre productions. Unlike some of Hero’s other writings, Pneumatica reads more like a manual for operating small devices, with concise and practical descriptions rather than theoretical elaboration. The quality of the diagrams in this work is particularly notable and has attracted considerable attention from historians.
One of the best-known surviving translations[6] of this work is by the Englishman Bennet Woodcroft, published in 1851 (Figure 2). This translation has become a standard reference for scholars seeking to understand the nature of Hero’s contributions. It highlights Hero’s practical orientation, which is quite distinctive among scholars of his stature.
Figure 2. An English translation of Hero’s book on Pneumatics
In comparison, the works of Archimedes and his immediate followers are generally more rigorous and focused on mathematical applications. Most of them do not discuss simple or seemingly trivial devices in the manner that Hero does in Pneumatica. Nevertheless, it is important to emphasize that Hero was deeply influenced by Archimedes. Many of the devices described in this book are based on principles associated with Archimedes and his pioneering work.
This is characteristic of Greek scholars, who regarded Archimedes as one of the earliest scientists to understand the natural world through systematic mathematics and physical models. In some of Hero’s other works, one sees this intellectual lineage in action, combining abstract analysis with practical application. This synthesis of theoretical and applied thinking positions Hero as a pioneer in engineering mechanics. Many of the devices he designed continue to be of great interest to both engineers and artists.
In this light, Pneumatica offers a compelling insight into Hero’s intellectual curiosity and his pedagogical intent, particularly in presenting devices to students through detailed and accessible instruction manuals.
5. Mechanica
Next, let us consider an overview of Hero’s book titled Mechanica. This work comprises three volumes, and the surviving text is available only in an Arabic translation. Some scholars believe that the content may have undergone certain alterations during the process of translation and transmission.
One of the earliest references to Mechanica dates to around 300 CE, made by Pappus of Alexandria, in a discussion on heavy weights and the methods used to lift them. The book is strongly grounded in principles originally proposed by Archimedes. It presents several mechanical principles with a degree of abstraction.
The concept of the balance, its theoretical foundations, and its relationship to various mechanical devices, such as pulleys, screws, and the wheel and axle, are discussed in considerable detail. A distinctive feature of this book is its treatment of the transportation of heavy objects using mechanical aids, as well as the application of the concept of the center of gravity to various solid forms and shapes.
The text includes a significant degree of abstraction and presents a theory of motion that provides insights into Hero’s understanding of mechanics and mechanical engineering. In this work, Hero refers to Archimedes as many as ten times, indicating a deep intellectual debt. Moreover, scholars have observed that Hero’s approach is indirectly influenced by Aristotelian perspectives on mechanical motion.
A notable aspect of the book is its emphasis on connecting abstract mechanical principles with practical applications. Devices such as the lever, pulley, wheel and axle, and various forms of screws are examined in depth. In this respect, Mechanica can be seen as an early treatise in engineering physics, serving as a key reference for understanding ancient mechanics and mechanical engineering.
The book’s content also reflects the context of the Hellenistic period, which was marked by elaborate construction projects. The principles and techniques discussed in Mechanica have potential relevance to these large-scale engineering efforts.
Finally, Mechanica exhibits strong intellectual continuity with Hero’s other works and shares conceptual commonalities with a few additional sources. This cohesion underscores Hero’s broader contribution to the understanding and development of mechanics in antiquity.
6. Other Works
Let us now consider a few other works of Hero of Alexandria. First among them is Metrica, a collection of three books and arguably the most well-known of his works. This text is primarily concerned with measurement and geometry and includes an elaborate discussion of what is now known as Hero’s formula—a well-known result in elementary geometry for calculating the area of a triangle given the lengths of its sides[7].
Metrica also explores the computation of square roots using iterative methods, a topic with significant applications in basic mathematics. The work focuses on the ability to perform measurements, including the calculation of volumes of solids such as Platonic solids and other fundamental geometric shapes. Ratios form another important aspect of the discussion, with solids considered in terms of divisions by arbitrary ratios, providing a geometric perspective on their structure.
The next important work is Dioptra, which deals with the measurement of length. It includes a discussion of the instrument known as the dioptra[8], which is directly related to surveying instruments that continue to be used in modified forms even today.
An interesting section of this work also discusses the odometer, a device used to measure the distance traveled by a moving object. This provides one of the earliest known references to such a device and highlights Hero’s interest in practical instrumentation.
Another fascinating work is Automata, in which Hero discusses automatic machines in great detail. This text is associated with the domains of magic, theatre, and mechanical marvels that were designed to captivate observers. There is extensive discussion on automatic doors and related architectural mechanisms, which were likely employed in temples or public spaces during Hero’s time. The work also includes ingenious systems for pouring and transporting liquids automatically, illustrating Hero’s advanced understanding of fluid mechanics and automation.
Taken together, these works reflect the rich intellectual repertoire of Hero of Alexandria. At the core of all his writings is a deep engagement with mechanics, approached both abstractly and practically. In this light, Hero’s contributions are of immense significance, offering valuable insights into the interplay between theory and application in ancient science and engineering.
7. Conclusion
Hero of Alexandria, embodied ancient human thought process that mixed physics and technology for intellectual and practical purposes. In a way, he laid the foundation to harness mechanics for practical applications and built on ideas proposed and utilised by great thinkers such as Archimedes and his followers. It is quite remarkable that a person of that era could come up with such interesting innovations for not only practical applications, but also for teaching and demonstrations for the public. Credit should also be given to the followers and students of Hero, who took his work forward and spread it across the world. Perhaps that is the best way to leave a legacy, by learning, creating and sharing knowledge.
REFERENCES:
[1] M. J. Schiefsky, “Theory and Practice in Heron’S Mechanics,” in Mechanics and Natural Philosophy Before the Scientific Revolution, W. R. Laird and S. Roux, Eds., Dordrecht: Springer Netherlands, 2008, pp. 15–49. doi: 10.1007/978-1-4020-5967-4_1.
[3] R. Masia, “On dating Hero of Alexandria,” Arch. Hist. Exact Sci., vol. 69, no. 3, pp. 231–255, 2015.
[4] A. G. (Aage G. Drachmann, The mechanical technology of Greek and Roman antiquity, a study of the literary sources. Copenhagen, Munksgaard; Madison, University of Wisconsin Press, 1963. Accessed: Jun. 11, 2025. [Online]. Available: http://archive.org/details/mechanicaltechno0000unse
[5] P. D. Bardis, “Hero, the Da Vinci of Alexandria: His Aeolosphaera and Other Inventions,” Sch. Sci. Math., vol. 65, no. 6, pp. 535–542, 1965, doi: 10.1111/j.1949-8594.1965.tb13497.x.
[6] H. (of Alexandria.), The Pneumatics of Hero of Alexandria: From the Original Greek. Charles Whittingham, 1851.
Vijaykumar Krishnamurthy is a faculty member at ICTS-TIFR, Bengaluru, working at the interface of physics and biology, with a focus on mechanochemical pattern formation in development. He is also the co-creator of Kaapi with Kuriosity, an outreach initiative that fosters public engagement with science through conversations and community events.
In this episode, we explore “physics of life” and his life in physics.
He specializes in integrated water management with a river basin perspective. His research focuses on adaptation, access, and use of water in agricultural and domestic sectors, often collaborating across disciplines. With extensive fieldwork in Southern India, he has led multidisciplinary projects on water resources management and adaptation. His work bridges environmental sustainability, development, and policy.
In this episode, we discuss his intellectual journey so far.
Bejoy K Thomas (ബിജോയ്) [@bejoykt]. 2024. “Traveling through Kuttanad/Vembanad Wetland, Where I Did My PhD Fieldwork Almost Two Decades Ago. Two and a Half Hours Boat Ride on Kerala State Water Transport Department (SWTD) from Alappuzha to Kottayam Costs Only 29 Rupees. Https://T.Co/nxCUVPMgfj.” Tweet. Twitter. https://x.com/bejoykt/status/1869608390504468810.
When we study the history of science, specifically physics, we find that a good idea simultaneously existed in various places. This suggests it may be better not to overemphasize a person for the origin of an idea. If we focus on the context, utility, and exchange of ideas, we get a broader picture of scientific ideas. This approach creates a spatio-temporal network, an interesting way to view the historical evolution of ideas across the humanities, space, and time. People, ideas, and technologies collectively progress the frontiers of science in various places at different times. In that sense, science, including physics, is a global human endeavor. This is evident when we look into the history of mechanics from ancient times until now. Mechanics is a fundamental sub-discipline of physics and has a strong connection to mathematics and engineering. It has evolved with logical reasoning and understanding of natural phenomena.
Engineering structures, which humanity has long been interested in, have played a significant role. Mechanics has been the playground of philosophers, scientists, and engineers. The questions it raised led to new thinking and new technologies. Mechanics offers a way to understand and engineer the universe. In this episode, we explore its links to mathematics, engineering, and key thinkers.
The importance of counting.
Counting has played a critical role in human life for a long time. In fact, we use fingers as a counting device, and this has been a very powerful tool for a significant period. So much so that it has been utilized to keep a tally of small numbers, which can be counted and analyzed in everyday life. Interestingly, as the numbers became larger, one had to externalize the counting process, and in ancient times, people had very creative methods to count objects. One of the fascinating aspects of counting was to use bones. Yes, bones were used as platforms on which marks were created, and these marks were utilized as the counts in a tally.
Images of Ishango bones with periodic marks on its surface.
One of the pieces of evidence for such behavior was found in the Congo Basin in a place called Ishango. The bones that were found are dated around 9000 BCE to 6500 BCE (although a big debate is going on regarding the dates, with some putting it beyond 20,000 BCE), on which marks have been identified that look like counts registered on the platform. Indeed, it is quite fascinating to see how people used various devices to enumerate objects. If you ask any child what is 1 plus 1, they will be able to say that it is 2. This may sound trivial, but the concept of addition itself was not in the historical context. To consider two numbers and add them together needs a certain degree of abstraction, which has been part of the evolution of mathematics since ancient times. A variety of counting methods have been devised in different civilizations, which have added a kind of flavour to the history of mathematics.
Importantly, language has played a critical role in facilitating a vocabulary for counting. Depending upon the syntax and the order of letters, numbers have been represented in a variety of ways across space and time of human history.
In this context, let me emphasize two important aspects of numbers and their representation. The first aspect is related to the positional notation. What is it? Let me give you an example. If you take numbers 24 and 42, the position of the number 4 is different. In 24, the number 4 is in the unit’s place, and in the number 42, it is in the tens place. So, the position of the number determines its value, and this is an important concept that civilizations have thought about and utilized in their counting systems. The second aspect is the concept of zero. Let me give an example. If you consider number 007 and compare it to 700, obviously, depending on the location of the zero, the value of the number drastically changes. But what is intriguing is that various civilizations used a variety of symbols, such as dots, circles, and empty spaces, to represent nothingness. What is not trivial is the recognition of zero as a number by itself. This needs a leap of thought because it must be an abstraction of a concept where the nothingness has to be associated with a number, and hence the association to zero. It was Brahmagupta around the year 628 CE in his Brahma Sputa Siddhanta that we first encountered the concept of zero as a number. This is indeed one of the great achievements because, without zero as a number, one cannot build mathematical concepts. It is both fundamental and profound. It has further played a critical role in laying the foundation of mathematics as we know it today.
02 Geometry
Now, let’s look at the connection between geometry and physics. Across various civilizations, the size and shapes of objects were curiosities, and understanding them was an important necessity for everyday life. Given that objects in the natural and artificial world come in various sizes and shapes, it was necessary to understand them for further utilization.
In ancient Greece, Thales of Miletus was one of the earliest to use a mathematical way of thinking and to formulate a framework to understand nature through logical analysis and not based on faith or myths. This thinking further percolated to all the subsequent philosophers, and that included a person named Pythagoras. Pythagoras’ life and times are not as well documented as those of other Greek philosophers, but by some estimates, he was supposed to have lived around 570 BCE to 495 BCE.
During that time, the Greeks had colonized various parts of Europe, and this included some parts of Italy. Pythagoras remained in that colonized part of Greece, where he had established a school, which was also interestingly a mythical cult. His school hardly shared any information with the outside world, and this is probably one of the reasons why there is very little known about Pythagoras’ life and times.
In fact, none of his writing has survived to date, and most of the information that we get is from indirect sources. However, the attribution of some scholars to Pythagoras’ work needs attention. Interestingly, Pythagoras did some experiments and tried to understand the production of sound.
He made an interesting connection to the strings and the pleasant sound that they produce. He hypothesized that there is a rational number of steps in strings that led to the pleasant sound. This thinking was further extrapolated to rational numbers, and that became an interesting connection. Pythagoras has also been attributed to have thought about astronomical objects.
Earth being spherical is one of the concepts that he had thought about and played a role in rationalizing the distances of objects such as the Sun, Moon, and planets. This kind of methodical thinking further influenced many Greek schools of thought, and this included the famous Plato’s Academy. Plato himself was a renowned philosopher, but he had a very strong inclination towards mathematics.
He also came up with the five solids and the four elements, which played a critical role in his interpreting of the natural world based on them. But it is in 300 BCE that we see an epoch in geometry in the form of Euclid’s Elements. Euclid of Alexandria was one of the great mathematicians whose work is still of significant relevance today.
Euclid, like many of his predecessors, had a life immersed in the ancient university system—in his case, the University of Alexandria. Again, not much is known about Euclid’s life and times, except for the fact that he wrote 13 volumes of his magnificent book titled Elements.
This book has turned out to be the foundation of mathematics and has played a critical role in creating a new worldview both for natural scientists and abstract mathematicians. Most of what we know today about Euclid is thanks to a Greek commentator, Theon of Alexandria, who lived roughly 700 years after Euclid. He played a critical role in interpreting and highlighting the works of Euclid, and going forward in time, Arabs took a keen interest in Euclid’s geometry and incorporated it into their education and research.
Euclid’s work on geometry is a masterpiece, which has 13 books in a series and contains 465 theorems. Each of them contains foundational knowledge about geometrical entities, including lines, angles, shapes, and solid geometries that past people had discussed. It is a tribute to his knowledge that Euclid’s Elements is still in print, and this shows how much the impact of Euclid has been over the centuries.
Importantly, the geometrical way of thinking has deeply influenced physics, along with the principle of counting and geometry. Physics, armed with mathematics, became an important way of looking at natural life in ancient times. This way of thinking further influenced another remarkable thinker named Archimedes of Syracuse.
If you want to think about a remarkable person who has deeply contributed to science and mathematics from ancient times, there is nobody better than Archimedes. Born in 287 BCE, Archimedes had a remarkable life because the number of things that are associated with him related to science, mathematics, and technology is probably unsurpassed compared to anybody else across the ages. Generally, when we talk about Archimedes, we associate him with the famous Eureka, where he probably ran naked in the excitement of discovering a specific concept related to buoyancy.
Of course, this might be altogether a myth, but the science that Archimedes did was indeed real and outstanding. He contributed to various areas in science, including mechanics, hydrodynamics, optics, engineering, and mathematics in both the pure and applied forms. We know about his achievements thanks to nine ancient Greek treatises, which give us a glimpse of his work.
An important aspect related to mechanics is the fact that in the ancient age, one can divide the contributions in terms of statics and dynamics. The dynamics aspect was mainly related to thinking driven by Aristotle and his school, which has turned out to be kind of incorrect from the modern viewpoint. But when it comes to statics, Archimedes had a very important role to play, and many of the discoveries he made have turned out to be correct and highly useful.
Related to statics, he wrote many interesting treatises, one of them being On the Equilibrium of Planes. In this book, he talks about the concept of the lever and utilizes the concept of the center of gravity. It is in this treatise where the concept of the center of gravity is used to understand various geometries, and he discusses the center of gravity of different geometrical objects.
Another important book related to Archimedes is On Floating Bodies. In this book, he discusses buoyancy and gives an important hypothesis to understand bodies immersed in a fluid. His discoveries were very critical in naval architecture.
Archimedes was not only an outstanding scientist but also an excellent engineer. He designed a water pump in which a hollow cylinder had a rotating helical shaft, which could pump water efficiently. This is usually called the Archimedes pump, and it has been used even to date.
Archimedes also contributed to the development of mathematics. He wrote On the Sphere and Cylinder and The Method, used for mechanical analysis.
One has to wonder whether he was one single person or many. Steven Strogatz’s book related to calculus, titled Infinite Powers: How Calculus Reveals the Secrets of the Universe, has a beautiful description of Archimedes’ contribution to understanding curves, including the circle and the determination of pi in an ingenious way. The logical process Archimedes used was unsurpassed for his time, and his contributions to science are among the most important from the ancient age.
There are also interesting stories related to his work, and one of them is called the Archimedes Palimpsest. A palimpsest is a technique in which one writes something, erases it, and rewrites on the same surface. In 1906, a Danish professor, Johan Heiberg, visited Constantinople to examine documents related to prayers, dated from the 13th century. To his surprise, it turned out that there was an underlying document beneath that prayer text, which was Archimedes’ writing.
It is truly outstanding that someone could discover such an important document after such a long time, and that’s another reason why one should do archival work—because you never know what kind of jewels one can discover. Archimedes contributed to various aspects of science, mathematics, and technology, but it is also vital to appreciate that he used a logical way of thinking. Such thinking had a deep influence on people who followed him, and even today, the process of his analysis stands up to scholarly scrutiny. It’s critical for us to realize that such people play a key role in spreading important ideas in science, in physics, and, in this case, mechanics.
Archimedes will surely be remembered as one of the greatest human beings who propelled human scientific thought. The legacy of Archimedes has been kept alive by introducing his figure on the Fields Medal, a major prize in mathematics. It’s considered the Nobel Prize equivalent in mathematics.
On the medal, there is an engraving with the quote: “Rise above oneself and grasp the world.” It is a great quotation to not only engrave on a medal but also to follow in letter and spirit.
With the same spirit to rise and grasp the world, we will explore the physics of mechanics going forward.
Padmanabhan, Thanu, and Vasanthi Padmanabhan. 2019. The Dawn of Science: Glimpses from History for the Curious Mind. Springer.
Stein, Sherman. 1999. Archimedes: What Did He Do Beside Cry Eureka?
Strogatz, Steven. 2019. Infinite Powers: How Calculus Reveals the Secrets of the Universe. Boston New York: Mariner Books.
Wu, Shiyue, and Francesco Perono Cacciafoco. 2024. “Understanding through the Numbers: Number Systems, Their Evolution, and Their Perception among Kula People from Alor Island, Southeastern Indonesia.” Humans 4 (1): 34–49. https://doi.org/10.3390/humans4010003.
K. Sridhar is a theoretical physicist and author currently at Azim Premji University, Bengaluru. Formerly at TIFR Mumbai, his research spans high-energy physics, including extra dimensions and supersymmetry. Sridhar also engages deeply with philosophy, literature, and education. He is the author of Particle Physics of Brane Worlds and Extra Dimensions (Cambridge University Press) and co-editor of Breaking the Silo: Integrated Science Education in India. In this conversation, we discuss his intellectual pursuits, including his recent novel Ajita.
