Some authors and writers spoke in their novels and books about some imaginary devices that later truly happened, some of these authors and writers are:
Leonardo Da Vinci (1452 – 1519)
Leonardo Da Vinci is a famous Italian painter; he was also an engineer, a geologist,a scientist, an anatomist , an architect, and a writer. Leonardo is widely considered to be one of the greatest painters of all time. He is also an inventor, his notes contains sketches of a helicopter, a tank, a calculator, plane and many other things. Below is his drawing of a helicopter designed by Leonardo and a model made recently.
Jules Verne (1828 – 1905)
Jules Verne is a famous French author, he spoke in his novels of different imaginary devices.Verne wrote about space, air, and underwater travel before navigable aircraft and practical submarines were invented, and before any means of space travel had been devised. In one of his novels,Verne predicted the inventions of helicopters, submarines, projectors. In a second novel he predicted of underwater hydrothermal vents that were discovered years after he wrote about them. In a third novel he spoke about Hydrogen engines. In another novel he wrote about a world of glass skyscrapers, high-speed trains, gas-powered automobiles, calculators, and a worldwide communications network.
Herbert George Wells (1866- 1946)
H. G. Wills is a famous English author, who wrote in his novels about the invisible man, time machine these subjects are imaginary. But he predicted about some other things that happened years later like atomic bomb and nuclear chain reaction.