How did classical mechanics develop before the 20th century?

Classical mechanics traces its theoretical roots back to Ancient Greece through writers like Aristotle and Archimedes, before foundational concepts were established in the early modern period by scientists like Galileo Galilei, Johannes Kepler, Christiaan Huygens, and Isaac Newton. A critical turning point occurred when Isaac Newton published his laws of motion and calculus in 1678, which paved the way for advanced analytical tools like Lagrangian and Hamiltonian mechanics in the following centuries. Although 20th-century discoveries in quantum mechanics and relativity challenged these traditional approaches, classical mechanics remains vital for describing macroscopic objects under non-relativistic and non-quantum conditions.

What we know

• Theoretical expositions of mechanics originated in Ancient Greece in the writings of figures such as Aristotle and Archimedes. [3]
• The critical historical event in classical mechanics was Isaac Newton's publication of his laws of motion and calculus in 1678. [2]
• During the 18th and 19th centuries, energy-based methods were developed by Euler, Lagrange, and Hamilton, leading to analytical mechanics. [4]
• Chaos theory is a subfield of classical mechanics that was developed in its modern form during the 20th century. [2]

Where to go next

• the bigger pictureHow did Ancient Greek philosophers view motion?
• whenWhat are the chronological milestones of classical mechanics?
• whoHow did Isaac Newton formulate his laws of motion?
• compared withHow does Hamiltonian mechanics differ from Newtonian mechanics?
• what followedHow did 20th-century physics challenge classical mechanics?
• an unexpected connectionHow do action principles connect classical physics to quantum mechanics?Analytical tools developed in classical mechanics, such as Hamiltonian mechanics and action principles, turned out to be critical concepts for the subsequent development of quantum mechanics.

Sources

• [1]history of classical mechanics (Wikidata Q5867520) · CC0 1.0
• [2]History of classical mechanics · CC BY-SA 4.0
• [3]Mechanics · CC BY-SA 4.0
• [4]Classical mechanics · CC BY-SA 4.0
• [5]Timeline of classical mechanics · CC BY-SA 4.0