Answer:The scientist you're referring to is Albert Einstein. In 1905, often referred to as his "Annus Mirabilis" or "miracle year," Einstein published groundbreaking papers on various topics, including his theory of special relativity. The paper "On the Electrodynamics of Moving Bodies" introduced the theory of special relativity and the famous equation E=mc².
Einstein's work on Brownian motion and the molecular-kinetic theory of heat shed light on the behavior of small particles suspended in fluids and contributed to the understanding of the atomic and molecular nature of matter.
Einstein's contributions to physics, especially his theories of relativity, have had a profound impact on our understanding of the universe and continue to be foundational principles in modern physics.
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