John William Strutt, also known as Lord Rayleigh, was a prominent British physicist born on November 12, 1842. He is best known for his work in the field of acoustics and for his research on the properties of gases. Strutt was awarded the Nobel Prize in Physics in 1904 for his investigations of the densities of the most important gases and for his discovery of Rayleigh scattering, which explains why the sky appears blue. In addition to his contributions to physics, Strutt was also an accomplished experimentalist and made significant advancements in the study of light and sound. He served as the president of the Royal Society from 1905 to 1908 and was a member of the House of Lords. Strutt passed away on June 30, 1919, leaving a lasting legacy in the scientific community.