De Valkenstein, Kees 1862-1952 creator text utu 2025 monographic nl 1 online resource : multiple file formats "De verdwijn-machine" by Kees Valkenstein is a novel likely written in the mid-20th century. The story revolves around Professor Wells, who invents a mysterious machine capable of making objects invisible, stirring curiosity and skepticism among the public. As his device gains attention, a significant part of his invention disappears, leading him on a quest to reclaim it. At the start of the novel, we are introduced to the aftermath of a world war as people return to normal life, with an emphasis on innovation. Professor Wells's invention is showcased, but it soon becomes a point of intrigue when half of it goes missing. We also meet the Bruggemans family, who are vacationing in the Veluwe and include a curious boy named Koen. While exploring the woods, Koen discovers a mysterious box containing the remains of the disappear machine, subsequently experiencing the astonishing effects of invisibility, both with objects and his interactions with his friend Piet. The opening sets up a blend of adventure and mystery surrounding the machine's capabilities and the adventures that will unfold. (This is an automatically generated summary.) Illustrated by the author. Release date is 2025-02-05 Jeroen Hellingman, Dwight Decker and the Online Distributed Proofreading Team at https://www.pgdp.net/ for Project Gutenberg Originally published: Utrecht: W. de Haan, 1917 Science fiction Inventions -- Juvenile fiction Crime -- Juvenile fiction PZ Utrecht: W. de Haan, 1917 https://www.gutenberg.org/ebooks/75301 https://www.gutenberg.org/ebooks/75301 UtSlPG 260607 20260610134737.0 75301