"Each time the discovery of new facts, the overthrow or extension of accepted theories, reminded us that science is never finished."
French physicist Charles Fabry was born #OTD in 1867.
Together with Henri Buisson, they made a groundbreaking discovery by identifying the presence of ozone in the Earth's atmosphere (1913). They used spectroscopic techniques to measure the absorption of ultraviolet light by atmospheric ozone, providing the first definitive evidence of the ozone layer.