Died on 1295
Hasan al-Rammah was a thirteenth century military engineer (d. 1294-1295 CE) who, described in his book al-furusiyya wa al-manasib al-harbiyya (The Book of, Military Horsemanship and Ingenious War Devices) the first process for the purification of potassium nitrate.
Born on 1432 Died on 1517
Hasan ibn Hussain Al-Tulunî belonged to a famed family of architects. Amongst his many works, he is known to have erected the mausoleum of khusqadam in Cairo, for which he received a robe of honour in 1462. For more detail click here.
Hezârfen Ahmed Çelebi was a legendary Ottoman of 17th-century Istanbul, purported to have achieved sustained unpowered flight. Click here for more information.
Born on 912 Died on 961
Ḥisdai ibn Shaprut was Jewish physician, translator, and political figure who helped inaugurate the golden age of Hebrew letters in Moorish Spain and who was a powerful statesman in a number of major diplomatic negotiations. Click here for more information.