In applied mathematics he studied optics, electricity, telegraphy, capillarity, elasticity, thermodynamics, potential theory, quantum theory, theory of relativity and cosmology .
Inilapat sa matematika siya-aral ng optika, koryente, telegrapya, maliliit na ugat, pagkalastiko, termodinamika, mga potensyal na teorya, quantum theory, theory ng kapamanggitan at kosmolohiya.