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This is the story of an Austrian inventor, his patent, and his appliance to make objects and people invisible on demand.
In the 1930s the Austrian press was excited about the invention about "invisibility rays" by an Austrian inventor. The invention was licensed by the company Semperit (the largest car and bicycle tire manufacturer in Austria) and exhibited at a trade show where it became a sensation and was viewed by hundreds of thousands of visitors. During that trade show, the inventor made for the first time also people invisible. He applied and received a patent in Great Britain for his invention. What was behind that sensation?How did it work? Who was the inventor?
1st edition 2022, PDF 18 pages.
word count: 5047 which is equivalent to 20 standard pages of text
