Question : Which physicist is known for discovering that any periodic wave can be represented as an infinite number of weighted sinusoids, i.e., the sum of sine and cosine waves?
Option 1: Louis de Broglie
Option 2: Jean-Baptiste Joseph Fourier
Option 3: Joseph-Louis Lagrange
Option 4: Ernest Walton
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Correct Answer: Jean-Baptiste Joseph Fourier
Solution : The correct option is Jean-Baptiste Joseph Fourier.
Jean-Baptiste Joseph Fourier is known for discovering that any periodic wave can be represented as an infinite number of weighted sinusoids, i.e., the sum of sine and cosine waves.
Fourier's work in the early 19th century led to the development of Fourier analysis and the Fourier series, a fundamental concept in mathematics and physics. This idea of decomposing complex periodic functions into simpler trigonometric components is now widely known as Fourier's theorem or Fourier transform.
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