Sir James Clerk Maxwell was a Scottish physicist born in 1831, best known for formulating the classical theory of electromagnetic radiation. His work unified electricity, magnetism, and light as manifestations of the same phenomenon, leading to the development of the Maxwell's equations, which describe how electric and magnetic fields interact. Maxwell's contributions extended beyond electromagnetism; he also made significant advancements in the field of thermodynamics and kinetic theory. His famous Maxwell's demon thought experiment illustrated the principles of entropy and the second law of thermodynamics, influencing future research in physics and engineering. Maxwell passed away in 1879, leaving a lasting legacy.