Giambattista della Porta
Italian philosopher
Alternative Title: Giovanni Battista della Porta
Giambattista della Porta, also called Giovanni Battista Della Porta, (born 1535?—died February 4, 1615, Naples [Italy]), Italian natural philosopher whose experimental research in optics and other fields was undermined by his credulous preoccupation with magic and the miraculous.
Della Porta founded the Accademia dei Segreti, which was later suppressed by the Inquisition, and in 1610 he took part in the reconstitution of the Accademia dei Lincei. He traveled widely in Italy, France, and Spain.
His major work is Magia naturalis (4 books, 1558; "Natural Magic"; 2nd ed., in 20 books, 1589), in which he treats the wonders and marvels of the natural world as phenomena underlain by a rational order that can be divined and manipulated by the natural philosopher through theoretical speculation and practical experiment. The work discusses such topics as demonology, magnetism, and the camera obscura (prototype of the camera), which made della Porta one of the pioneers in the use of the lens. His other works include: De furtivis literarum notis: Vulgo de ziferis (1563); Arte del ricordare (1566); Villae (1583–92), an agricultural encyclopaedia; De humana physiognomonia (1586); De refractione, optices parte (1593); Pneumaticorum (1601), which was augmented in the Italian translation (De' spiritali, 1606) with a description of a steam engine anticipating that of Thomas Savery of 1698; Caelestis physiognomoniae (1601), a confutation of judicial astrology; and De distillatione (1609), containing various chemical discoveries.
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cryptology: Early cryptographic systems and applications
) Giambattista della Porta provided a modified form of a square encryption/decryption table and the earliest example of a digraphic cipher in De furtivis literarum notis (1563; "The Notorious Secret Literature"). The Traicté des chiffres ("Treatise on Ciphers"), published in 1586 by Blaise de Vigenère, contains…
history of photography: Antecedents
…the Italian scientist and writer Giambattista della Porta demonstrated and described in detail the use of a camera obscura with a lens. While artists in subsequent centuries commonly used variations on the camera obscura to create images they could trace, the results from these devices depended on the artist's drawing…
commedia erudita
…this literary form; the philosopher-playwright Giambattista della Porta, author of a number of stinging satires; and Niccolò Machiavelli, whose La mandragola (1524; "The Mandrake") was one of the outstanding comedies of the century.…
"Magia naturalis"
subjects of study
MacTutor History of Mathematics Archive - Biography of Giambattista Della Porta
The Galileo Project - Biography of Porta, Giambattista della