Al-Muradi

Alī Ibn Khalaf al-Murādī, (11th century) Al-Andalus, was an engineer and author of the unique technological manuscript entitled Kitāb al-asrār fī natā'ij al-afkār (The Book of Secrets in the Results of Thoughts).^[1] It was copied and used at the court of Alfonso VI of León and Castile in Christian Spain in the 11th century.^{[citation needed]}

The manuscript provides information about a "Castle and Gazelle Clock" and many other forms of complicated clocks and ingenious devices. Al-Muradi was a contemporary of Abū Ishāq Ibrāhīm al-Zarqālī.^{[citation needed]}

In 2008, the Book of Secrets of al-Muradi has been published in fac-simile, translated in Eglish/Italian/French/Arabic and in electronic edition with all machines intrpreted in 3D, by the Italian study center Leonardo3.

He also devised, with help from al-Zarqali, the universal astrolabe.^[2] Both al-Muradi and al-Zarqali's design were included in the Libros del Saber(1227) of Alfonso X of Castile.^[3]

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