Charles-Fabry

Charles Fabry’s Optical Revolution And Spectroscopy: How Ozone Was Discovered, Charles Fabry Physicist

Born on June 11, 1867 in Marseille, France, physicist Charles Fabry along with other French scientists developed the theory of multibeam interference and discovered the ozone layer. Fabry graduated from the University of Paris in 1892 and became an employee of the University of Marseille in 1894.

Charles fabry, he is not alone. His brothers were also scientists, mathematician Eugene and astronomer Lewis. Both graduated from the Ecole Plytechnique in Paris.

Charles Fabry

At Britannica’s launch on Thursday, June 11, Fabry developed a science project with Alfred Bert, the Fabry-Perot interferometer, which would quickly revolutionize optics and spectroscopy. The binary is based on an interferometer, or elaton, based on the Fabry theory of multibeam interference.

This version of the device is still used today in high definition spectrometers. Fabry-Pérot interferometers rely on multiple reflections of light between two parallel mirrors in a plane.

The distribution of light produced by an interfering beam that has undergone a different number of reflections is characterized by monochromatic light that produces a set of sharp concentric circles with well-defined maximums and minimums. The different wavelengths of the incident light can be distinguished by the combination of the resulting rings.

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This tool produces sharper edges than those designed by the American scientist Albert Mickelson. Fabry and Perot have been collaborating for nearly a decade by applying interferometers to spectroscopy and metrology.

Fabry’s early work focused on light disturbances. His main research instrument was the Fabry-Pérot interferometer. This interferometer was discovered in 1896 as a result of a scientific project with Alfred Perrault. This instrument is widely used to measure the wavelength of light and related research.

Fabry’s interest in astronomy grew through the observation of fellow students. This interest led him to use interferometers to study the spectra of the sun and stars and improved photometric techniques to measure the brightness of the night sky.

Meanwhile, while applying it to study the spectrum of sunlight and stars, Fabry discovered that the sun’s ultraviolet rays are filtered by the ozone layer. The ozone layer acts as a layer that protects life on Earth’s surface from the harmful effects of ultraviolet rays.

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In 1921, Fabry took up a professorship at the Sorbonne in Paris and became the first director of the city’s Optical Institute. Some of Fabry’s awards include the 1918 Rumford Medal of the Royal Society of London, the 1921 American Franklin Medal, and the 1933 Optical Society honorary designation. Lay people can understand his work.

In his later years, Fabry assisted French scientists in World War II. At the end of the war, his ill health forced him to return to Paris, where he died in 1945 at the age of 78.

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