The “reading stone” was invented during the 9th century; it is a piece of glass cut in half, when placed on a text, it magnifies it. It is believed thatAbbas ibn Firnasinvented the reading stone. All these were early attempts to improve vision and magnify objects. Who made glasses? S...
' The starting pistol was invented byKarl Marx's sister Onya. Who is the first creator of gun? The first device identified as a gun, a bamboo tube that used gunpowder to fire a spear, appeared inChinaaround AD 1000. The Chinese had previously invented gunpowder in the 9th century. Best ...