Each invention has a story and history, and each discovery has its events. The twentieth century had witnessed great and various innovations and inventions, which had had the greatest impact on human development and well-being. Moreover, each invention or discovery had adventurers whom we are very thankful for helping our nations to develop. From here, these stories and anecdotes were collected as a stimulation for the coming generations to create, and do what is useful, and to enlighten their minds, and help them to devote thought, time and money for the good of nations.
This series contains interesting valuable scientific subjects about: