Bacon
Bacon, Roger. 1214-94. English Franciscan monk. Advocated scientific experiment, observation. Alchemist. Formulated gunpowder. Magnifying glass 1250. Opus Majus 1266.Telescope.
Bacon, Roger. 1214-94. English Franciscan monk. Advocated scientific experiment, observation. Alchemist. Formulated gunpowder. Magnifying glass 1250. Opus Majus 1266.Telescope.