Even before his first astronomy paper was published, Herschel published details of his chemical and photography experiments in 1819 which, 20 years later, would prove of fundamental importance in the development of photography.
Kahit na bago ang kanyang unang astronomy papel ay nai-publish, Herschel-publish na mga detalye ng kanyang chemical at photography eksperimento sa 1819 na, 20 years later, nais patunayan ng pangunahing kahalagahan sa pag-unlad ng photography.