Which Slovak-born physicist and mathematician designed the Petzval portrait lens in 1840?
Answer and explanation
Correct answer: A. Jozef Maximilián Petzval, born in Spišská Belá
- Step 1: The Petzval lens was one of the first lenses that were built using mathematical calculations. Step 2. Petzval was born in Spišská Belá in 1807 and worked in Vienna. Answer: Jozef Maximilián Petzval. Why not the others: Segner, Stodola and Kempelen are known for other inventions.
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